Which of the following is responsible for causing liver cirrhosis?

Why is drug and alcohol abuse observed during adolescence?

Given below are two statements.
Statement $I$ - Consumption of narcotic analgesics,anabolic steroids and diuretics decreases muscle strength.
Statement $II$ - In females,the anabolic steroids may lead to masculinization and mood swings.
In the light of above statements,choose the most appropriate answer from the options given below.

Which of the following substances are commonly misused by athletes to enhance performance?

Which of the following effects is $NOT$ caused by the abuse of cocaine?

Thebaine is obtained from . . . . . . .