Question

In accumulation of toxic substances at higher trophic levels of an ecosystem through the food chain, which of the following organisms is affected the most?

Options

• Small aquatic plants

• Human beings

• Small fish

• Large fish

Answer 1

Human beings

Explanation:

This process is called biomagnification, in which toxic substances increase in concentration at higher trophic levels. Since human beings are at the top of the food chain, they accumulate the maximum amount of toxic substances and are affected the most.