真龙木木
51.B 因为：A plant(植物) makes its own food in its leaves .52. B 因为：The green coloring in the leaves uses the water and air to make the food for the plant . It also needs sunshine because a plant can make food only when the sun is shining.53.A 因为：Air gets into the leaves through very small holes（孔）.4. C. 因为：It also needs sunshine because a plant can make food only when the sun is shining.55.C.因为：Animals and people could not live without green plants.
薇宝儿521
是的，所有的生物生长发育繁殖都需要能量，那么这种能量就是保存于体内的有机物通过氧化分解而来的，那么人体的有机物又是从何而来呢，两种途径：一 直接获取，可以通过吞噬其他生物或寄生于其他生物儿获得 二可以通过自生合成有机物，但是合成有机物的原料也需要从体外获取。 总而言之 生命都需要吸收养分，只是不同种生物吸取的养分不同而已。
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