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Elanso [62]
3 years ago
5

Until the early There were only negligible amounts of free oxygen in the atmosphere

Geography
1 answer:
Svet_ta [14]3 years ago
3 0
Until the early Proterozic there were only negligible amounts of free oxygen in the atmosphere
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Why the majority of species live on earth and not in the sea is one of the top questions of science. The following are some of the reasons some scientists quote:

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Explanation:

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