Which of the following is an example of adaptation?
a) a rabbit population in which all of the members change fur color from brown to white as the seasons change.
b) a butterfly population where each individual makes more of an enzyme for processing plant toxins as its exposure to toxic plants increases.
c) an eagle population where adult eagles develop a tolerance for invasive mites over five years.
d) a fish population in which the average skin brightness decreases over several generations in the presence of predators.

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen