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Someone Please Help!! ASAP!!!!!!
What trend do you notice about the relative amount of carbon dioxide in the atmosphere over time? And for oxygen? What factors could cause changes in the carbon dioxide and oxygen gas levels of Earth’s atmosphere?

Someone Please Help ASAPWhat trend do you notice about the relative amount of carbon dioxide in the atmosphere over time And for oxygen What factors could cause class=

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Answer:

The proportion of oxygen went up because of photosynthesis by plants. The proportion of carbon dioxide went down because: it was locked up in sedimentary rocks (such as limestone) and in fossil fuels. it was absorbed by plants for photosynthesis.

Explanation:

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