Answer:
A. Because the target population soon develops a resistance to the chemical
Explanation:
I believe this is the correct answer here because it would be similar to how humans develop tolerance for medicine and illicit drugs; over time, we would need more and more of the drug to achieve the same result. It is also logical. B and C are definitely not correct nor are they logical, and D is not logical either; human population growth does not influence current farmers that much, and even if it did, humans would not need a higher quality of pesticide, just a higher quantity.
Answer:
Why do humans need more potent pesticides over time?
because the target population soon develops a resistance to the chemical
Explanation:
Over time when pest are exposed to pesticides to much, at a point in time they will develop resistance which calls for change of pesticides application.
