Biology
Biology, 22.12.2019 16:31, inesperezferrere

Which of the following events occurred about 1.2 billion years ago and resulted in an increased rate of evolution for earth’s life forms?

development of sexual reproduction

development of photosynthesis

emergence of single-cell organisms

accumulation of atmospheric oxygen

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Which of the following events occurred about 1.2 billion years ago and resulted in an increased rate...

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