Plants are the main source of atmospheric oxygen.

大气中的氧主要是由植物产生的。

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Usually, atmospheric oxygen content is about 20%, carbon dioxide containing about 0.03%.

通常，大气中的氧气含量约为20%，二氧化碳约含0.03%。

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As atmospheric oxygen levels fall, less oxygen will dissolve in seawater, depleting levels slightly.

由于大气中氧气含量的减少，较少的氧气溶于海水，使得海水中的含氧量轻微的减少。

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Its red sands are also full of iron, turned to rust by atmospheric oxygen.

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They provide safe havens for ocean wildlife to recover and maintain healthy biodiversity, supporting habitats that act as carbon sinks, removing CO2 from the air and generating the majority of atmospheric oxygen.

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At higher altitudes, where atmospheric pressure is lower, oxygen enters the body less readily, leading to the hypoxic state.

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