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Biology, 23.06.2019 00:30
Paleontologists have found plant fossils deep within the layers of the north polar region. these leaf fossils have been labeled as to the rock layers they were found in, with the lower numbers being layers close to the earth's surface and higher numbers representing deeper layers. according to the numbers of these four leaf fossils, what might you infer?
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Biology, 23.06.2019 05:50
Happen when the wrong amino acid is placed during protein sythesis a gene alterations b gene rearrangements c insertions d deletions
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Biology, 23.06.2019 11:30
What is a pigment is any substance that absorbs light. the color of the pigment comes from the wavelengths of light reflected. since chlorophyll is a green pigment, it reflects
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What substance does not come from petroleum...
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