Tobacco is used by $...$.

Which of the following factors is responsible for drug and alcohol abuse among adolescents?

Which factors are responsible for drug and alcohol abuse?

Identify the correct statements from the following:
$(i)$ With repeated use of drugs,the tolerance level of the receptors present in the body increases.
$(ii)$ Youngsters often use drugs repeatedly due to financial gains.
$(iii)$ Lack of proper guidance or counseling leads individuals to become addicts.
$(iv)$ Repeated use of alcohol leads to 'withdrawal syndrome'.

Sleep is prevented by

Morphine is extracted from the fruit of . . . . . . .