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.
- What are petals?
- How can phloem be described?
- Why should tissue paper or handkerchief used?
- What happens to glucose in liver?
- What are symptoms of cold?
- How can xylem be described?