2. Which one is the best answer that how do corals react when sea water temperatures are too high?
(A)They reproduce in large numbers.
(B) They slow down their shell-building processes.
(C) They migrate to areas with lower water temperatures.
(D)They expel their symbiotic algae.
(E)They produce more pigment.
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統計: A(1), B(8), C(4), D(27), E(3) #2430296
統計: A(1), B(8), C(4), D(27), E(3) #2430296