Physical and mental dependency on any specific drug is known as

What is obtained from the plant Erythroxylum coca,and what are its effects on the human body?

From which part of the plant is hashish obtained?

When does withdrawal syndrome occur?

In a young addict,symptoms such as inhibition of brain activity,calming of the brain,and feelings of relaxation are observed. Which drug is he likely consuming?

$LSD$ is derived from which of the following?