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15-06-2020
Biology

contestada

Which event in Earth's history most directly allowed life to exist on land?

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agarza123abc agarza123abc

15-06-2020

Answer: Single cell organisms absorbed harmful gases from the air when they first formed

Explanation:

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galileaespino galileaespino

26-10-2020

Answer: Single-celled organisms released oxygen into the air when they photosynthesized.

Explanation:

I got 100% on the test

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