改错题
With all the troubles that humanity faces, why should we care about the condition of living nature? Homo sapiens is species confined to an extreme- 【M1】______ ly small niche. Truly, our minds soar out to the edges of the universe and 【M2】______ contract inward to subatomic particles—the two extremes encompassing 30 powers often in space. In respect, our intellects are godlike. But, let's face it, 【M3】______ our bodies stay trapped inside of a proportionately microscopic envelope of 【M4】______ physical constraints. Earth provides a self-regulating bubble that sustains us indefinitely without any thought or contrivance of our own. This protective shield is the biosphere, the totality of life, creator of all air, cleanser of all water, manager of all soil—though is itself a fragile membrane that barely 【M5】______ clings to the face of the planet. We depend upon its razor-thin health for ev ery moment of our lives. We belong in the biosphere, we were born here like 【M6】______ species, we are closely suited on its exacting conditions—and not all condi- 【M7】______ tions, either, but just that in a few of the climatic regimes that exist upon 【M8】______ some of the lands. Environmental damage can be denned as any change that 【M9】______ alters our surroundings in a direction contradictory to humanity's inborn 【M10】______ physical and emotional needs. We must be careful with the environment upon which our lives depend.