Which is the greatest source of air pollution these days?

Define environmental chemistry.

Dinitrogen is a robust compound,but reacts at high altitude to form oxides. The oxide of nitrogen that can damage plant leaves and retard photosynthesis is

Which among the following statements is $NOT$ true according to principles of green chemistry?

The upper stratosphere,consisting of the ozone layer,protects us from the sun's radiation that falls in the wavelength region of

The pair of gases responsible for acid rain are