Which of the following is a crude form of heroin?

Which of the following plants possesses hallucinogenic properties?

Symptoms of restlessness,shivering,nausea,and sweating are seen in which disease?

Liver cirrhosis is caused by ...........

If an addict takes drugs through injections,which diseases are they likely to contract? $(i)$ Malaria $(ii)$ Filariasis $(iii)$ $AIDS$ $(iv)$ Hepatitis-$B$

Explain adolescence in detail.