Fossil stromatolites are evidence that cells existed 3.5 million years ago.
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Q44: Which period of Earth represents when evolution
Q45: During which period did shallow seas cover
Q46: The serial endosymbiosis hypothesis states that the
Q47: Identify three ways in which the evolution
Q48: The prebiotic soup hypothesis proposes that organic
Q50: What was the dominant life form of
Q51: Eons are the largest divisions of the
Q52: The Devonian period is frequently called the_,
Q53: Mammal-like reptiles arose during which period?
A) Triassic
Q54: Tiktaalik was a transitional form between fishes
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