IN DNA, bases pair by forming across complementary strands.
A. hydrogen bonds
B. covalent bo...
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Biology, 22.06.2019 07:00
The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.
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Biology, 22.06.2019 13:00
This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic.
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Biology, 22.06.2019 13:20
There are only about 250,000 known fossil species. true or false
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Biology, 22.06.2019 15:10
When energy is used, atp molecules convert to adp molecules. this process is called
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