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b96220294133 : 若環境改變時,物種的變化有三種可能性:. 基因變化 - 自然選擇 - 物種數量與環境達平衡. LinThe answers to these questions involve two different ways of dealing with pollution. One is pollution prevention,or input pollution control,which reduces or eliminates the production of pollutants. The other is pollution cleanup, or output pollution control, which involves cleaning up or diluting pollutants after they have been produced. 這些問題的答案涉及兩個不同的方法來處理污染。其中之一是防止污染,或輸入污染控制,從而降低或消除了生產中的污染物。 養分循環:自然透過回收的化學品,植物和動物的生存和生育下代所需要的。 訂閱: 文章 (Atom).
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