試題詳解

57. The population cycle of the snowshoe hare and its predator indicates that
(A) predators are not the only factor controlling the size of prey populations.
(B) the two species must have evolved in close contact because one cannot live without the other.
(C) both populations are controlled mainly by abiotic factors.
(D) the hare populations is r-selected, whereas the lynx population is K-selected.
(E) both C and D are correct.