Smoking And The Effects.

Explanation
Nicotine is the addictive substance in cigarettes. It is a highly addictive drug that stimulates the release of dopamine in the brain, creating a pleasurable sensation. This leads to cravings and dependence on nicotine. Tar and tobacco are components of cigarettes, but nicotine is the primary addictive substance responsible for the addictive nature of smoking.

Explanation
The correct answer is 87%. This means that out of all the deaths caused by lung cancer, 87% of them are attributed to smoking. This high percentage indicates the strong correlation between smoking and lung cancer. It emphasizes the significant impact that smoking has on the development and progression of this deadly disease.

Explanation
The question asks whether all the mentioned chemicals are found in cigarette smoke. The correct answer is "yes" because cigarette smoke contains over 4000 chemical agents, including over 60 carcinogens, carbon monoxide, tar, arsenic, and lead. These chemicals are known to be harmful to human health and are associated with various diseases, including cancer.

Explanation
The correct answer is £2000. If someone smokes 20 cigarettes a day, they would be spending £2000 a year on cigarettes. This is calculated by multiplying the cost of a pack of cigarettes (let's say £10) by the number of packs smoked in a year (365 days divided by 20 cigarettes per day, which equals 18.25 packs). So, £10 multiplied by 18.25 packs equals £182.50 per month, and £182.50 multiplied by 12 months equals £2190 per year. Therefore, the correct answer is £2000.

Explanation
Roll-up cigarettes, also known as hand-rolled cigarettes, are made by rolling loose tobacco in a rolling paper. These cigarettes do not undergo the same manufacturing processes as commercially produced cigarettes, which means they may contain higher levels of harmful substances such as tar, nicotine, and carcinogens. Smoking any form of tobacco, including roll-up cigarettes, has been linked to an increased risk of developing various types of cancer, including lung, mouth, throat, and esophageal cancer. Therefore, it can be concluded that roll-up cigarettes do cause cancer.

Explanation
The correct answer is "no" because even if you don't inhale the smoke, it can still harm your health. Smoking produces toxic chemicals that can be absorbed through the skin and mucous membranes, leading to various health issues such as lung cancer, heart disease, and respiratory problems. Additionally, secondhand smoke can also be harmful to others around you. Therefore, it is not okay to smoke even if you don't inhale.