Which of the following is a white crystalline drug that acts as an analgesic and provides a sense of euphoria?

What is $LSD$?

In what form is opium obtained from the poppy plant?

Those who take drugs intravenously (direct injection into the vein using a needle and syringe),are much more likely to acquire serious infections like?

Given below are two statements with respect to the neurotransmitter,$Dopamine$.
Statement-$I$: Degeneration of $Dopamine$-producing neurons causes $Parkinson's$ disease.
Statement-$II$: $Dopamine$ level increases due to cocaine.
Choose the most appropriate answer from the options given below.

Addiction to alcohol causes