Smoking of tobacca adds:

(a) What is Active and Passive Smoking? (b) What are the effects of smoking on respiratory system ?

Smoking is not related to

In a survey concerning the smoking habits of consumers it was found that 50% smoke cigarette A, 45% smoke B, 40% smoke C, 25% smoke A and B, 10% smoke B and C, 16% smoke C and A, 8% smoke all the three brands. What percentage do not smoke ?

Smoking is used as a technique of

Tobacca plants resistant ot nematodes have been developed by introductions of DNA that produces

A person smokes other person's tobacco smoke is called_____

Assertion. Physiological damage caused by smoking is not reversed even if smoking is given up. Reason. Passive smoking makes the damage persist.