The Complete Book of 100,000 Reasons Why
Favlit. ten thousand reasons why
为什么树能净化空气？
1、树通过光合作用吸收二氧化碳，释放出氧气，这是它们净化空气的基本原理。
2、树叶上的微小气孔能够过滤空气中的尘埃和污染物，如PM2.5等，从而改善空气质量。
3、树木的根系可以吸收土壤中的有害物质，如重金属和放射性元素，减少这些物质进入空气。
4、树木释放的挥发性有机化合物（VOCs）能够吸附空气中的有害气体，如二氧化硫和氮氧化物。
5、树木的遮荫效果可以降低地表温度，减少地面扬尘和热岛效应，间接改善空气质量。
总之，树通过光合作用、过滤尘埃、吸收有害物质、释放有益气体和调节气候等多种方式净化空气，是自然界中不可或缺的空气净化器。
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