Differentiate between biodegradable and non-biodegradable?

Differentiate biodegradable and non-biodegradable pollutants.classify the following under the above two categories:DDT,Paper,Cotton cloth,Plastics.

What are biodegradable and non-biodegradable pollutants?

Differentiate between metals and non-metals

What are biodegradable and non-biodegradable detergents ?

Differentiate between lizards and snakes.

Differentiate between Antigen and Antibody