Explain how some harmful chemicals enter our bodies through the food chain. Why is the concentration of these harmful chemicals found to be maximum in human beings?
a) Harmful chemicals biomagnify as they move up the food chain, accumulating in tissues of organisms. Human beings, being at the top of the food chain, accumulate the highest concentrations.
b) Harmful chemicals degrade as they move up the food chain, accumulating in tissues of organisms. Human beings, being at the top of the food chain, accumulate the highest concentrations.
c) Harmful chemicals are absorbed only by plants in the food chain, leading to high concentrations in human beings.
d) Harmful chemicals are absorbed only by animals in the food chain, leading to high concentrations in human beings.
