Infectious diseases are caused by a. viruses c. bacteria b. fungi d. all of the above

i think its d but im not sure

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

Two critical interventions to turn around the opioid crises are:

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic