Can someone hep me please?.

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.

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.