4. Which statement is not true about environmental change?
(A)It affects the organisms that live in the ecosystem where it occurs.
(B)It always happens quickly.
(C)It can be caused by natural disasters.
(D)It can cause destruction of food.
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統計: A(3), B(29), C(12), D(2), E(0) #1342045
統計: A(3), B(29), C(12), D(2), E(0) #1342045