What does the given figure represent?

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

What does the latex obtained by making an incision in the poppy capsule look like on the next day?

The substance $\Delta-9$-tetrahydrocannabinol is found in which of the following?

What are nerve depressants?

$Heroin$ : slows down body functions :: $cocaine$ :