A farmer is growing a crop regularly in his field. He uses chemical fertilizers, pesticides, organic manure as well as bio-fertilizers. Very close to his field is a factory which emits smoke as a by product. There is also a huge lake in the nearby area.
______ is the increase in the concentration of harmful chemical substances in the body of living organisms.

Options

A. Biological oxygen demand
B. Biomagnification
C. Biosynthesis
D. Biogeochemical cycle

Answer

B

Explanation

Increase in the concentration of harmful chemical substances in the body of living organisms is known as biomagnification Biological magnification increases at each trophic level.