Biology, 27.04.2021 20:50 murillokiara0kiki
Something about fossils i don't get. PLEASE HELP
About 530 million years ago, an evolutionary period known as the "Cambrian explosion" took place. Large numbers of new animal species appear in the fossil record that corresponds with this time.
Based on patterns of extinctions documented in the fossil record, about how many of these Cambrian species are probably still surviving today?
A- none of them
B- All of them
C-most of them
D-A very small number of them
Answers: 2
Biology, 21.06.2019 21:30, irishdreamer0689
List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.
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Biology, 21.06.2019 22:50, Brainly264
Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry
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The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?
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Something about fossils i don't get. PLEASE HELP
About 530 million years ago, an evolutionary peri...
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