What is the answer to this question I need help I am taking a test

Afarmer has applied a pesticide to control a pest population that is affecting her crops. the pest population has reacted as shown below. which best describes the process that the pest population has experienced due to this environmental change? a genetic diversity b natural selection c natural resistance d genetic resistance

What maintain homeostasis when a persons internal body temperature is 97.5°f

Which could be a pathway of food through an ecosystem