Question

what term is used to describe a phenomenon in which pests become resistant to a pesticide over time - making farmers apply more and more pesticide each time they spray? biomagnification a pesticide treadmill persistence bioaccumulation

Explanation:

• Biomagnification refers to the increase in concentration of a substance (like a pesticide) as it moves up the food chain.
• Persistence means a pesticide remains in the environment for a long time without breaking down.
• Bioaccumulation is the accumulation of a substance in an organism over time.
• A pesticide treadmill is when pests develop resistance to a pesticide, so farmers have to use more and more of it, which matches the description in the question.

Answer:

B. a pesticide treadmill