$LSD$ (Lysergic acid diethylamide) is prepared from

Blood circulation was discovered by

Smoking addiction is harmful because it produces polycyclic aromatic hydrocarbons, which cause

Assertion : A person who has received a cut and is bleeding needs to be given anti tetanus treatment.

Reason : Anti-tetanus injection provides immunity by producing antibodies for tetanus.

Oncogene is another name for

Assertion : Dope test is used to estimate the level of blood alcohol by analyzing the breath of persons drinking alcohol.

Reason : A drunken person usually feels tense and less talkative.