树木给人类提供了氧气，供人类呼吸生存，同时吸收二氧化碳维持空气的平衡。森林的重要性人人皆知。《地球之肺——森林》以形象生动的语言，开阔读者的视野，使读者对于树木对人类的影响有更进一步的了解，保护好森林，给我们一份清晰的空气！
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