12. one of the physical characteristics about a gas

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.

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f