Which of the following is not a greenhouse gas?

The $10\%$ energy transfer law of food chain was given by

$NO_2$ and $O_3$ react with unburnt hydrocarbons in polluted air to form .....

Acid rain occurs due to atmospheric pollution of

What is the process of removal of topsoil by the action of wind and water called?

State whether the following statements are true or false:
$(1)$ Mist is produced by particles of spread liquid and by condensation of vapour in air.
$(2)$ Particulate matter of size up to $5 \ \mu m$ reaches directly into the lungs.
$(3)$ Ozone and nitric oxide cause irritation in the nose and throat.