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Nastasia [14]
3 years ago
13

The last time the atmospheric carbon dioxide level was as high as it is today was _________ years ago.

Chemistry
1 answer:
Nastasia [14]3 years ago
8 0

Answer:The last time levels of atmospheric carbon dioxide were this high came during the Pliocene Epoch, which extended from about 5.3 million to 2.6 million years ago

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