44. According to the passage, how does plant life positively affect the environment?
(A) Stabilizes ecosystems and moderates climates.
(B) Decreases biodiversity for new food crops and medicines.
(C) Provides shelter for and feeds the endangered animal species.
(D) Creates watersheds and increases erosion rates.
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統計: A(76), B(5), C(18), D(3), E(0) #3432205
統計: A(76), B(5), C(18), D(3), E(0) #3432205