Nitrogen oxides are produced from the emissions of automobiles and power stations,which are a source of fine particulate matter in the air,leading to the formation of .....

It refers to the amount of oxygen that would be consumed if all the organic matter in one liter of water were oxidized by bacteria.

Minamata disease is a pollution-related disease that results from:

Consider the following statements:
$I.$ Algal blooms are formed by free-floating algae.
$II.$ Algal blooms cause fish mortality and deterioration of water quality.
$III.$ Water hyacinth, the world's most problematic aquatic weed, is also called 'Terror of Bengal'.
Which of the statements given above are correct about algal blooms?

Acid rain is caused by:

Name the states involved in the Ganga Action Plan.