Question

what term is used to describe the ability of a species to become less susceptible to the effects of a pesticide over time? resistance botanicals

Explanation:

The question is about the term for a species' reduced susceptibility to a pesticide over time. In biology (a subfield of Natural Science), "Resistance" refers to this ability, while "Botanicals" are plant - derived substances, not related to this concept.

Answer:

A. Resistance