Topic: Food Energy and Respiration Subtopic: Diseases of the respiratory system
How many chemicals are used in tobacco smoke?
Answer: When we smoke tobacco, we are inhaling very harmful chemicals. The number of chemicals present in a cigarette is nearly 300.
Learn also:
- What is root cap?
- What are Cilia and why are they important?
- How body tries to fight flu virus?
- What is meant by word extinct?
- How is hemophilia caused?
- What makes heart sound like dub?


 Free MCQsLearn App Download -
 Free MCQsLearn App Download - 
