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? chlorinated hydrocarbons pesticide treadmill

Explanation:

The question is about a phenomenon where pests develop resistance to pesticides, leading to increased pesticide use. "Chlorinated hydrocarbons" are a type of pesticide, not a phenomenon. "Pesticide treadmill" describes the cycle of pests becoming resistant, so farmers use more pesticides, fitting the described phenomenon.

Answer:

B. Pesticide treadmill (assuming the options are labeled with A for Chlorinated hydrocarbons and B for Pesticide treadmill, with the second option being the correct one as per the explanation)