Feed can sometimes be to supply important antibiotics for animal health.

Blood, made up of red and white blood cells, work together to form

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 is the following best defines climate?