The earth formed roughly 4.5 billion years ago, yet evidence of life dates back to about 3.5 billion years ago. which one is not a possible hypothesis of how life on earth arose?
a) from rna to dna.
b) from the formation of metabolic networks.
c) from inorganic molecules to organic molecules.
d) from cells that were delivered by meteorites from outer space.
Answers: 2
Biology, 22.06.2019 06:00, Ryan02717
Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time
Answers: 1
Biology, 22.06.2019 13:00, Evilgus4846
Blank is a rock with a find dark texture that makes up the oceanic crust
Answers: 1
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