OBJECTIVE FORESTRY

Detailed explanation-1: -The process of a buildup of certain chemical substances or toxins at the higher trophic levels of a food chain is termed Biomagnification. This is also referred to as biological magnification. The chemical substances include certain toxins, heavy metals, mercury and other harmful products at a higher concentration.

Detailed explanation-2: -An important process through which chemicals can affect living organisms is bioaccumulation. Bioaccumulation means an increase in the concentration of a chemical in a biological organism over time, compared to the chemical’s concentration in the environment.

Detailed explanation-3: -Bioaccumulation occurs when toxins build up-or accumulate-in a food chain. The animals at the top of the food chain are affected most severely. This is what happens: Small amounts of toxic substances-often pesticides or pollution from human activity-are absorbed by plants.