While it is true that living organisms are profoundly affected by their environment, it is equally important to remember that ma

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问题     While it is true that living organisms are profoundly affected by their environment, it is equally important to remember that many organisms are also capable of altering their habitant significantly, sometimes limiting their own growth. The influence of the biological component of an ecosystem is often greater in fresh waters than that in marine or terrestrial systems, because of the small size of many freshwater bodies.

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答案 尽管生物会深受其环境的影响是确凿无疑的,但同样重要的是,我们应记住,许多生物也能极大地改变它们的栖息地,从而在某些情况下限制着它们自身的生长。某一生态系统中的生物组成部分的影响在淡水环境中往往要比在海洋或陆地系统中大,因为淡水中许多生物体的身体尺寸都很小。

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