Biology Unit 1 Ecology And The Environment
Questions cover material from unit 1
Questions and Answers
- 1.
In an overpopulated country, would it be beneficial to make a shift from eating beef to eating food crops such as wheat or rice? Explain your answer.
- 2.
Producers are also known as _______.
Explanation
Producers are organisms that are capable of producing their own food through photosynthesis or chemosynthesis. They convert energy from sunlight or chemical reactions into organic molecules, which can be used as a source of energy by other organisms. Autotrophs is another term used to describe producers, as they are self-sufficient in their energy production.Rate this question:
- 3.
What is the process of converting light energy to chemical energy?
Explanation
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy in the form of glucose. This process occurs in the chloroplasts of the cells, where chlorophyll captures the energy from sunlight and uses it to combine carbon dioxide and water to produce glucose and oxygen. The glucose is then stored as chemical energy, which can be used by the organism for growth, reproduction, and other metabolic processes. Therefore, photosynthesis is the correct answer for the process of converting light energy to chemical energy.Rate this question:
- 4.
During cellular respiration, food energy is converted to ______ energy.
Explanation
During cellular respiration, the process by which cells convert glucose and oxygen into energy, the food energy is converted into ATP (adenosine triphosphate). ATP is the primary energy currency of cells and is used to power various cellular processes. It is produced through a series of reactions in the mitochondria, where glucose is broken down and its energy is captured in the form of ATP molecules. These ATP molecules can then be used by the cell to perform work, such as muscle contraction, active transport, and synthesis of macromolecules.Rate this question:
- 5.
_______ are defined as straight line order of who eats whom in an ecosystem.
Explanation
Food chains are defined as the straight line order of who eats whom in an ecosystem. They represent the flow of energy and nutrients from one organism to another. Each step in a food chain is known as a trophic level, and it shows the transfer of energy as one organism consumes another. Food chains are important in understanding the interactions and dynamics within an ecosystem, as they show the dependency and interconnectivity between different species.Rate this question:
- 6.
________ is defined as all the living organisms in a given area and their interactions with their environment.
Explanation
An ecosystem is a term used to describe all the living organisms in a specific area and their interactions with each other and their surrounding environment. This includes plants, animals, microorganisms, and their physical surroundings such as soil, water, and air. It encompasses the relationships, energy flow, and nutrient cycling between these organisms and their environment. The concept of an ecosystem helps to understand the interconnectedness and interdependence of different species and the impact they have on their surroundings.Rate this question:
- 7.
Tree -> catepillar -> robin -> hawk -> coyotewhich is the tertiary consumer?
- A.
Tree
- B.
Catepillar
- C.
Robin
- D.
Hawk
- E.
Coyote
Correct Answer
D. HawkExplanation
The given sequence represents a food chain, starting with the producer (tree) and progressing to the primary consumer (catepillar), secondary consumer (robin), and finally the tertiary consumer (hawk). The hawk is the tertiary consumer because it is at the highest trophic level in this food chain, feeding on the robin which is a secondary consumer.Rate this question:
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- 8.
_______________ produces molecules of carbon dioxide.
- A.
Cell respiration
- B.
Photosynthesis
- C.
Both a & b
Correct Answer
A. Cell respirationExplanation
Cell respiration is the process by which cells break down glucose and produce energy. During this process, molecules of carbon dioxide are released as a byproduct. Therefore, cell respiration produces molecules of carbon dioxide. Photosynthesis, on the other hand, is the process by which plants convert carbon dioxide into glucose and release oxygen. So, the correct answer is cell respiration.Rate this question:
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- 9.
Carbon dioxide enters and oxygen exits by way of tiny pores on the leaves called ________.
Correct Answer
stomataExplanation
Stomata are tiny pores found on the surface of leaves that allow for the exchange of gases. They are responsible for the entry of carbon dioxide into the leaf for photosynthesis and the exit of oxygen produced during this process. Stomata play a crucial role in regulating the exchange of gases between the plant and its environment, enabling the plant to obtain the necessary carbon dioxide for photosynthesis and release oxygen as a byproduct.Rate this question:
- 10.
________ requires molecules of oxygen to complete the reaction.
- A.
Cell respiration
- B.
Photosynthesis
Correct Answer
A. Cell respirationExplanation
Cell respiration requires molecules of oxygen to complete the reaction. During cell respiration, glucose is broken down in the presence of oxygen to produce energy in the form of ATP. This process occurs in the mitochondria of cells and is essential for the release of energy needed for various cellular activities. Without oxygen, cell respiration cannot proceed efficiently, resulting in a decrease in ATP production and potentially leading to cell death.Rate this question:
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- 11.
_______ describes living organisms in an ecosystem.
- A.
Biotic
- B.
Abiotic
Correct Answer
A. BioticExplanation
Biotic refers to the living components of an ecosystem, such as plants, animals, and microorganisms. This term describes the interactions, relationships, and dependencies between these organisms and how they contribute to the functioning of the ecosystem. Biotic factors play a crucial role in shaping the structure and dynamics of an ecosystem, including nutrient cycling, energy flow, and population dynamics.Rate this question:
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- 12.
_________ requires glucose or other organic (food) molecules to begin the reaction.
- A.
Cell respiration
- B.
Photosynthesis
Correct Answer
A. Cell respirationExplanation
Cell respiration is the correct answer because it is the process by which cells break down glucose or other organic molecules to produce energy in the form of ATP. This process occurs in the mitochondria of cells and requires the presence of glucose or other organic molecules as fuel to initiate the reaction. Without these molecules, cell respiration cannot occur and cells would not be able to produce the energy they need to carry out their functions.Rate this question:
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- 13.
The biopshere is a(n) __________ system with respects to energy.
Correct Answer
openExplanation
The biosphere is an open system with respect to energy because it continuously exchanges energy with its surroundings. This means that energy flows into and out of the biosphere, allowing for the transfer of energy between different ecosystems and organisms. This energy exchange is essential for the functioning of the biosphere, as it enables the processes of photosynthesis, respiration, and other metabolic activities that sustain life.Rate this question:
- 14.
Tree -> catepillar -> robin -> hawk -> coyotewhich is the secondary consumer?
- A.
Tree
- B.
Catepillar
- C.
Robin
- D.
Hawk
- E.
Coyote
Correct Answer
C. RobinExplanation
The secondary consumer in this food chain is the robin. A secondary consumer is an organism that feeds on primary consumers, which in this case is the caterpillar. Since the robin feeds on the caterpillar, it is considered a secondary consumer.Rate this question:
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- 15.
_____ is an example of a fat soluble chemical that accumulates in aquatic food chains.
Correct Answer
DDT
lead
mercury
cadmium
nuclear wastesExplanation
DDT, lead, mercury, cadmium, and nuclear wastes are all examples of fat-soluble chemicals that can accumulate in aquatic food chains. This means that these chemicals have the ability to dissolve in fats and oils, allowing them to be stored and build up in the tissues of organisms. As these chemicals are consumed by smaller organisms, they are passed on to larger organisms through the food chain, resulting in higher concentrations in the top predators. This process, known as biomagnification, can have harmful effects on the health and survival of these organisms and can also pose risks to humans who consume contaminated seafood.Rate this question:
- 16.
About _____% of the available energy is lost between levels of a trophic pyramid.
Correct Answer
90Explanation
Approximately 90% of the available energy is lost between levels of a trophic pyramid. This is because energy is transferred from one trophic level to another through the consumption of organisms, and this transfer is not efficient. As organisms consume other organisms, a large portion of the energy is used for metabolic processes, such as respiration, movement, and growth. Only a small fraction of the energy is converted into biomass and passed on to the next trophic level. This energy loss occurs at each level of the trophic pyramid, resulting in a significant decrease in available energy as you move up the pyramid.Rate this question:
- 17.
Global warming is related to the carbon cycle because fossil fuel consumption releases ________ gas.
Correct Answer
carbon dioxide
CO2Explanation
Global warming is related to the carbon cycle because when fossil fuels are consumed, they release carbon dioxide (CO2) gas into the atmosphere. Carbon dioxide is a greenhouse gas that traps heat from the sun, leading to an increase in the Earth's temperature. This phenomenon is known as global warming. Therefore, the release of carbon dioxide through fossil fuel consumption contributes to the ongoing issue of global warming.Rate this question:
- 18.
________ produces ATP energy from food energy.
- A.
Cell respiration
- B.
Photosynthesis
- C.
Both a & b
Correct Answer
A. Cell respirationExplanation
Cell respiration is the correct answer because it is the process by which cells break down food molecules to release energy in the form of ATP. This process occurs in the mitochondria of cells and is essential for the survival and functioning of all living organisms. Photosynthesis, on the other hand, is the process by which plants convert sunlight into chemical energy in the form of glucose. While both processes involve energy transformations, only cell respiration directly produces ATP energy from food energy.Rate this question:
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- 19.
What is the smallest unit of an element of matter?
- A.
Multicellular organisms
- B.
Subatomic particles
- C.
Molecules
- D.
Cells
- E.
Atoms
Correct Answer
E. AtomsExplanation
Atoms are the smallest unit of an element of matter. They are the building blocks of all matter and cannot be broken down further without losing their properties. Atoms combine to form molecules, which in turn form cells, organisms, and everything else in the universe. Subatomic particles, such as protons, neutrons, and electrons, make up atoms, but they are not the smallest unit of an element. Multicellular organisms are composed of many cells, which are made up of molecules and atoms. Therefore, atoms are the correct answer as the smallest unit of an element of matter.Rate this question:
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- 20.
___________ produces glucose molecules.
- A.
Cell respiration
- B.
Photosynthesis
- C.
Both a & b
Correct Answer
B. pHotosynthesisExplanation
Photosynthesis is the process by which plants, algae, and some bacteria convert sunlight, carbon dioxide, and water into glucose and oxygen. During this process, glucose molecules are produced as a result of the conversion of light energy into chemical energy. Therefore, the correct answer is photosynthesis.Rate this question:
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- 21.
Fossil fuel formation is part of the ____ pathway of the carbon cycle because formation of fossil fuels takes millions of years.
Correct Answer
slowExplanation
Fossil fuel formation is considered part of the slow pathway of the carbon cycle because it takes millions of years for fossil fuels to form. This process involves the decomposition of organic matter, such as dead plants and animals, under high pressure and temperature over an extended period of time. The slow nature of this process is what distinguishes it from other pathways in the carbon cycle, such as the fast or intermediate pathways.Rate this question:
- 22.
Organisms that feed on both plants and animals are called __________.
Correct Answer
omnivoresExplanation
Omnivores are organisms that have the ability to consume and digest both plant and animal matter. They have a diverse diet that includes a combination of fruits, vegetables, meat, and other food sources. This adaptability allows them to obtain a wide range of nutrients from different sources, making them highly versatile in their feeding habits. Examples of omnivores include humans, bears, raccoons, and some bird species.Rate this question:
- 23.
A trophic level is also called a _________.
Correct Answer
feeding levelExplanation
A trophic level is also called a feeding level because it refers to the position of an organism in a food chain or food web, indicating its source of energy and its role in transferring energy through the ecosystem. Each trophic level represents a different level of energy transfer, starting with primary producers (plants) at the first trophic level, followed by herbivores at the second trophic level, then carnivores or omnivores at higher trophic levels. Therefore, "feeding level" is an appropriate term to describe trophic levels as it emphasizes the flow of energy and nutrients from one organism to another based on their feeding relationships.Rate this question:
- 24.
_____ is defined as the study of life.
Correct Answer
biologyExplanation
Biology is defined as the study of life. It encompasses the examination of living organisms, their structure, function, growth, evolution, and distribution. This field of science explores various aspects of life, including the diversity and interrelationships of organisms, their interactions with the environment, and the mechanisms that govern life processes. By studying biology, scientists gain a deeper understanding of the natural world and the intricate workings of living systems.Rate this question:
- 25.
Example of a member of a detritus food chain.
Correct Answer
fungus
insects
worms
beetles
bacteriaExplanation
The given options represent different organisms that are part of a detritus food chain. Detritus food chains involve the decomposition of dead organic matter, such as leaves and dead animals, and the subsequent consumption of this detritus by various organisms. Fungus is often the first organism to break down the dead matter, followed by insects, worms, beetles, and bacteria. These organisms play a crucial role in breaking down organic matter and recycling nutrients back into the ecosystem.Rate this question:
- 26.
During photosynthesis solar energy is converted into _______ energy.
Correct Answer
foodExplanation
During photosynthesis, solar energy is converted into chemical energy. This chemical energy is used to synthesize glucose, which is a type of food for plants. Therefore, the correct answer is "food."Rate this question:
- 27.
What percent of energy is passed on to the next trophic level?
- A.
10%
- B.
50%
- C.
75%
- D.
90%
- E.
100%
Correct Answer
A. 10%Explanation
In an ecosystem, energy is transferred from one trophic level to the next through food chains. The energy transfer is not 100% efficient due to various factors such as metabolic processes, heat loss, and incomplete digestion. Only a fraction of the energy is passed on to the next trophic level. The correct answer is 10%, indicating that only 10% of the energy is transferred to the next level, while the remaining 90% is lost as heat or used for metabolic processes.Rate this question:
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- 28.
_______ requires molecules of carbon dioxide gas to begin the reaction.
- A.
Cell respiration
- B.
Photosynthesis
Correct Answer
B. pHotosynthesisExplanation
Photosynthesis is the correct answer because it is the process by which plants, algae, and some bacteria convert carbon dioxide and water into glucose and oxygen, using sunlight as an energy source. During photosynthesis, carbon dioxide molecules are required to initiate the reaction and serve as a source of carbon for the synthesis of glucose. In contrast, cell respiration is the process by which cells break down glucose to produce energy, and it does not require carbon dioxide molecules to begin the reaction.Rate this question:
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- 29.
Humans and other animals do this.
- A.
Cell respiration
- B.
Photosynthesis
- C.
Both a & b
Correct Answer
A. Cell respirationExplanation
Cell respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water. This process occurs in both humans and other animals to provide energy for various cellular activities. Photosynthesis, on the other hand, is the process by which plants convert sunlight, carbon dioxide, and water into glucose and oxygen. Since humans and other animals do not perform photosynthesis, the correct answer is cell respiration.Rate this question:
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- 30.
_________ requires water molecules to begin the reaction.
- A.
Cell respiration
- B.
Photosynthesis
Correct Answer
B. pHotosynthesisExplanation
Photosynthesis is the process by which plants convert sunlight into energy, and it requires water molecules to initiate the reaction. During photosynthesis, water molecules are split into hydrogen and oxygen, with the oxygen being released into the atmosphere. The hydrogen is then used to convert carbon dioxide into glucose, which is used as energy by the plant. Therefore, water is an essential component for photosynthesis to occur.Rate this question:
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- 31.
The biosphere is a(n) _______ system in terms of materials.
Correct Answer
closedExplanation
The biosphere is considered a closed system in terms of materials because it is self-contained and does not exchange matter with its surroundings. This means that the materials within the biosphere, such as nutrients and gases, are recycled and reused within the system. The biosphere is able to sustain life and maintain its equilibrium by efficiently cycling and reusing these materials, without relying on external sources. This closed nature of the biosphere allows for the continuous flow and balance of materials, ensuring the survival and functioning of various ecosystems within it.Rate this question:
- 32.
Tree -> catepillar -> robin -> hawk -> coyotewhich is the primary consumer?
- A.
Tree
- B.
Catepillar
- C.
Robin
- D.
Hawk
- E.
Coyote
Correct Answer
B. CatepillarExplanation
The primary consumer in this food chain is the caterpillar. The primary consumer is the organism that directly consumes the producers, in this case, the caterpillar feeds on the tree.Rate this question:
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- 33.
Water provides the ______________ needed to build glucose molecules.
Correct Answer
hydrogen and oxygen
oxygen and hydrogenExplanation
Water provides the hydrogen and oxygen atoms needed to build glucose molecules. In the process of photosynthesis, plants use water molecules to split them into hydrogen and oxygen. The hydrogen atoms are then used to combine with carbon dioxide to form glucose molecules, while the oxygen atoms are released as a byproduct. Therefore, both hydrogen and oxygen are essential components for building glucose molecules, making the answer "hydrogen and oxygen, oxygen and hydrogen" correct.Rate this question:
- 34.
Organisms that feed on both plants and animals are called ________.
- A.
Autotrophs
- B.
Producers
- C.
Carnivores
- D.
Omnivores
Correct Answer
D. OmnivoresExplanation
Organisms that feed on both plants and animals are called omnivores. This term is used to describe animals that have a varied diet, including both plant matter and other animals. Examples of omnivores include humans, bears, and raccoons. They have the ability to obtain nutrients from both plant sources and animal sources, allowing them to adapt to a wide range of environments and food availability.Rate this question:
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- 35.
The biosphere can be considered a ____________ that includes thousands of smaller ecosystems.
Correct Answer
global ecosystemExplanation
The biosphere refers to the part of the Earth's surface and atmosphere where living organisms exist. It encompasses all the interconnected ecosystems on Earth, including deserts, forests, oceans, and more. Therefore, it can be considered a global ecosystem as it includes thousands of smaller ecosystems that are interconnected and influence each other.Rate this question:
- 36.
Algae and other green plants do this.
- A.
Cell respiration
- B.
Photosynthesis
- C.
Both a & b
Correct Answer
C. Both a & bExplanation
Both algae and other green plants are capable of performing cell respiration and photosynthesis. Cell respiration is the process by which cells convert glucose and oxygen into carbon dioxide, water, and energy. Photosynthesis, on the other hand, is the process by which plants use sunlight, carbon dioxide, and water to produce glucose and oxygen. Since both algae and green plants are capable of carrying out these two processes, the correct answer is "both a & b."Rate this question:
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- 37.
Green plants trap light energy with the help of a pigment called ___________ to complete the process of photosynthesis.
Correct Answer
chlorophylExplanation
Green plants use a pigment called chlorophyll to trap light energy and convert it into chemical energy through the process of photosynthesis. Chlorophyll is responsible for capturing sunlight and using it to produce glucose, which is the primary source of energy for plants. Without chlorophyll, plants would not be able to carry out photosynthesis and obtain the energy they need to survive and grow.Rate this question:
- 38.
What is defined as interlocking food chains; present in most ecosystems?
Correct Answer
food websExplanation
Food webs are defined as interlocking food chains present in most ecosystems. A food web is a complex network of interconnected food chains that shows the flow of energy and nutrients through different organisms in an ecosystem. It illustrates how different organisms are linked together through their feeding relationships. Each organism in a food web occupies a specific trophic level and is either a producer, consumer, or decomposer. The interconnectedness of food chains in a food web allows for the transfer of energy and matter between different species, promoting stability and balance within an ecosystem.Rate this question:
- 39.
_______ describes nonliving components of the ecosystem; physical and chemical factors needed for life.
- A.
Biotic
- B.
Abiotic
Correct Answer
B. AbioticExplanation
Abiotic factors refer to the nonliving components of an ecosystem that are essential for life. These factors include physical elements such as temperature, sunlight, water, soil, and chemical elements like oxygen, carbon dioxide, and nutrients. They create the necessary conditions for organisms to survive and thrive in an ecosystem. Biotic factors, on the other hand, are the living components of an ecosystem, including plants, animals, and microorganisms. Therefore, the correct answer is "abiotic" as it specifically describes the nonliving components that are vital for life in an ecosystem.Rate this question:
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- 40.
Which if the following is an example of a producer?
- A.
Squirrel
- B.
Herbivore
- C.
Grass
- D.
Mushroom
- E.
Omnivore
Correct Answer
C. GrassExplanation
Grass is an example of a producer because it is able to produce its own food through photosynthesis. Producers are organisms that can convert sunlight, water, and carbon dioxide into energy-rich organic compounds, such as glucose. Grass uses this energy to grow and provide food for other organisms in the ecosystem. In contrast, squirrels, herbivores, mushrooms, and omnivores are not producers as they rely on consuming other organisms for their energy and nutrients.Rate this question:
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- 41.
What is defined as the study of interactions of organisms with one another and their physical environment (living and nonliving)?
- A.
Biology
- B.
Botony
- C.
Ecology
- D.
Sociology
Correct Answer
C. EcologyExplanation
Ecology is the correct answer because it is the branch of science that focuses on the study of interactions between organisms and their environment, including both living and nonliving components. It examines how organisms interact with each other and their physical surroundings, such as the interactions between plants and animals, and the impact of environmental factors on their behavior and distribution. Ecology plays a crucial role in understanding and addressing environmental issues and conservation efforts.Rate this question:
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- 42.
Most of the energy that fuels the living systems on earth comes from the _______.
- A.
Producers
- B.
Consumers
- C.
Decomposers
- D.
Sun
Correct Answer
D. SunExplanation
The sun is the primary source of energy for living systems on earth. Through the process of photosynthesis, producers such as plants and algae convert sunlight into chemical energy, which is then passed on to consumers and decomposers in the food chain. Without the sun's energy, life on earth would not be sustainable as it provides the necessary energy for growth, reproduction, and other vital biological processes.Rate this question:
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- 43.
Most ________ perform photosynthesis.
- A.
Producers
- B.
Primary consumers
- C.
Secondary consumers
- D.
Tertiary consumers
- E.
Decomposers
Correct Answer
A. ProducersExplanation
Producers are organisms that have the ability to produce their own food through photosynthesis. They convert sunlight, water, and carbon dioxide into glucose and oxygen. Examples of producers include plants, algae, and some bacteria. Since the question states that "most" organisms perform photosynthesis, it implies that the correct answer is producers.Rate this question:
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- 44.
_________ requires light energy to begin the reaction.
- A.
Cell respiration
- B.
Photosynthesis
Correct Answer
B. pHotosynthesisExplanation
Photosynthesis is the correct answer because it is the process by which green plants and some other organisms convert sunlight into chemical energy. This energy is used to fuel the production of glucose and oxygen from carbon dioxide and water. Light energy is essential for photosynthesis to occur as it is absorbed by chlorophyll in the plant's cells, initiating the reaction that leads to the production of glucose. Cell respiration, on the other hand, is the process by which cells break down glucose to release energy, and it does not require light energy to begin the reaction.Rate this question:
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- 45.
______ feed on producers.
- A.
Producers
- B.
Primary consumers
- C.
Secondary consumers
- D.
Tertiary consumers
- E.
Decomposers
Correct Answer(s)
B. Primary consumers
E. DecomposersExplanation
Primary consumers and decomposers both feed on producers. Primary consumers, also known as herbivores, are organisms that consume plants as their primary source of food. Decomposers, on the other hand, break down dead organic matter, including plant material, and obtain nutrients from it. Both primary consumers and decomposers play important roles in the food chain by obtaining energy from producers and recycling nutrients back into the ecosystem.Rate this question:
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- 46.
______ are part of the detritus food chain and include insects, worms and beetles.
- A.
Detritus feeders
- B.
Scavengers
- C.
Decomposers
Correct Answer
A. Detritus feedersExplanation
Detritus feeders are organisms that consume dead organic matter, such as insects, worms, and beetles. They play a crucial role in the detritus food chain by breaking down and recycling nutrients from decaying plant and animal material. Unlike scavengers, which typically feed on larger carcasses, detritus feeders primarily consume smaller organic particles. Decomposers, on the other hand, are microorganisms that break down organic matter into simpler compounds. While decomposers are also important in the detritus food chain, the question specifically mentions insects, worms, and beetles, which are examples of detritus feeders.Rate this question:
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- 47.
Decomposers and detritus feeders do this.
- A.
Cell respiration
- B.
Photosynthesis
- C.
Both a & b
Correct Answer
A. Cell respirationExplanation
Decomposers and detritus feeders carry out cell respiration. Cell respiration is the process by which cells break down organic molecules to release energy. Decomposers and detritus feeders, such as bacteria and fungi, obtain energy by breaking down dead organic matter through cell respiration. This process is essential for recycling nutrients back into the ecosystem. Photosynthesis, on the other hand, is the process by which plants and some other organisms convert sunlight into energy-rich molecules. Therefore, the correct answer is cell respiration.Rate this question:
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- 48.
________ produces molecules of oxygen.
- A.
Cell respiration
- B.
Photosynthesis
- C.
Both a & b
Correct Answer
B. pHotosynthesisExplanation
Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll pigment, carbon dioxide, and water. One of the byproducts of this process is oxygen, which is released into the atmosphere. Therefore, photosynthesis produces molecules of oxygen. Cell respiration, on the other hand, is a process that occurs in all living cells and involves the breakdown of glucose to produce energy, but it does not produce oxygen.Rate this question:
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- 49.
_________ is defined as an area of land, air, and water that supports life on earth.
Correct Answer
biosphereExplanation
The biosphere is the correct answer because it refers to the area of land, air, and water that sustains life on Earth. It encompasses all ecosystems, including forests, oceans, deserts, and even the atmosphere. The biosphere is where living organisms interact with each other and their environment, exchanging energy and nutrients. It is crucial for maintaining the delicate balance necessary for life to thrive on our planet.Rate this question:
- 50.
Since the biosphere is a closed system in terms of materials, materials necessary for life must be __________.
Correct Answer
recycledExplanation
The biosphere is a closed system, meaning that materials cannot be added or removed from it. Therefore, in order for life to continue, the materials necessary for life must be recycled within the biosphere. This ensures that the essential elements and compounds needed for living organisms, such as carbon, nitrogen, and water, are continuously reused and do not become depleted over time. Without recycling, the biosphere would not be able to sustain life in the long term.Rate this question:
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