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Fav十万个为什么
为什么大气中的氧气没有被太阳光分解？
大气中的氧气没有被太阳光分解，主要基于以下几个原因：
1、臭氧层的保护作用：臭氧层能够吸收太阳光中的大部分紫外线，尤其是能够分解氧气的短波紫外线，从而保护大气中的氧气不被分解。
2、氧气分子的稳定性：氧气分子（O₂）具有较高的化学稳定性，需要高能量才能将其分解为单个氧原子，而太阳光中的能量不足以大规模分解氧气分子。
3、大气中氧气动态平衡：植物的光合作用不断生成氧气，补充因化学反应和生物呼吸等过程消耗的氧气，维持了大气中氧气的动态平衡。
总结：大气中的氧气没有被太阳光分解，主要归因于臭氧层的保护作用、氧气分子的高稳定性以及光合作用维持的动态平衡。这些因素共同作用，使大气中的氧气得以稳定存在。
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