Which era is characterized by stromatolites as the most abundant fossil?
Mesozoic
Precambria...
Biology, 14.10.2021 01:10 Quidlord03
Which era is characterized by stromatolites as the most abundant fossil?
Mesozoic
Precambrian
Paleozoic
Cenozoic
Answers: 3
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Half of the polar bears in a small population die. this population may experience changes due to gene flow mutation genetic drift natural selection
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