Sedimentary rocks form when

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.

What do nitrifying bacteria convert

What percentage does each square in a punnett square represent? a.25% b.33% c.50%