Question

How can harmful chemicals such as agricultural pesticides unknowingly enter the food chain?

Options

• They are absorbed from soil and water by plants and aquatic organisms.

• They are converted into solar input by human beings.

• They are produced by successive trophic levels.

• They return from herbivores to autotrophs.

Answer 1

Agricultural pesticides can be absorbed from soil and water. Plants and aquatic organisms can then introduce these harmful chemicals into the food chain.