Biology, 25.04.2021 02:20 frankie666
What caused the oxygen levels in Earth’s atmosphere to increase during the Precambrian time? Choose the correct answer.
Land plants evolved and released oxygen as they grew.
The chemical weathering of granite released large quantities of oxygen.
Oxygen dissolved in the ocean was released by osmosis into the atmosphere.
Cyanobacteria consumed carbon dioxide and released oxygen as a waste product.
Answers: 1
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What caused the oxygen levels in Earth’s atmosphere to increase during the Precambrian time? Choose...
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