Biology, 23.10.2019 00:00 lizdeleon248
The great oxygen event marks the time, approximately 2.5 billion years ago, when
there was enough oxygen in the atmosphere to support a major burst of life on earth
there was a cataclysmic weather event that absorbed most of the oxygen in the atmosphere and locked it into iron deposits in the oceans
there was significant oxygen in the atmosphere
there was a massive volcanic eruption that lead to a very rapid increase in oxygen levels on earth
photosynthesis was clearly established and producing oxygen.
Answers: 1
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If two parents who's blood types are both b produce a child that has blood type o, what can you say about the parent's genotybes? oa) one is ii ob) one is ibi oc) both are bi od) nothing, this is impossible
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For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a. control b. hypothesis c. procedure d. system
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What molecules does hemoglobin decay into over time
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The great oxygen event marks the time, approximately 2.5 billion years ago, when
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