The universe is composed of about 100 grouped into

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

Rotenone is an insecticide that is toxic