Part of the immune system's job is to "remember" the lymph sent through the lymphatic system. O the B cells produced by antibodies. the coordinated actions of T cells. the antigens it has dealt with in the past.​

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.

Consider the equation s + o2 ? so2. what is the product? question 3 options: s so 2 s + so 2 o 2

What do transitional fossils best support?