Air pollution causing the production of photochemical oxidants includes:

Describe the sources of air pollution and its effects on organisms.

Air pollution is controlled by:

The harmful effect of air pollutants depends on which of the following factors?

Consider the following statements about a scrubber:
$I.$ It is used to remove gases like sulphur dioxide from industrial exhaust.
$II.$ In a scrubber,the exhaust is passed through a spray of water or lime.
$III.$ Water dissolves gases and lime reacts with sulphur dioxide to form a precipitate of calcium sulphate or calcium sulphide.
Which of the statements given above are correct?

The harmful effects of air pollution depend on $.......$.