The flow of organic matter in a food chain is unidirectional.

In the food chain
Grass $\rightarrow$ Deer $\rightarrow$ Lion
operating in a forest,what will happen if all the
$(a)$ lions are removed?
$(b)$ deers are removed?

Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as

Draw a food chain which operates in a forest ecosystem.

How does the concentration of a pesticide change once it enters a food chain?

Which of the following is a top-level carnivore?