explain how tobacco smoke can be harmful to the body.

Brief Explanations:

Tobacco smoke contains harmful chemicals like nicotine, tar, and carbon - monoxide. Nicotine is addictive and can increase heart rate and blood pressure. Tar can coat the lungs and cause respiratory problems. Carbon - monoxide binds to hemoglobin, reducing oxygen delivery. Long - term exposure can lead to various diseases such as lung cancer, heart disease, and respiratory disorders.

Answer:

Tobacco smoke contains harmful chemicals such as nicotine (addictive, raises heart rate and blood pressure), tar (coats lungs, causes respiratory issues), and carbon - monoxide (reduces oxygen delivery). Long - term exposure can lead to diseases like lung cancer, heart disease, and respiratory disorders.