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Biology, 22.06.2019 10:30
There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.
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Biology, 22.06.2019 11:30
Nucleic acids offer variability because they contain alternate forms of genes called .
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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 15:30
(me out over the last several centuries, scientists have made the following broad observations while investigating several branches of the life sciences: -the fossil record shows that different types of organisms have existed at different times in earth's history. -many organisms have similar body structures that seem to be adapted to different ways of living in their environment. -organisms of different species often share similarities in stages of embryonic development. -many species share genetic similarities, and almost all organisms use the same basic building blocks to construct proteins. -often, the extent of two species' similarities can be predicted from their geographic closeness to each other. -a great deal of change has been observed among species that have experienced strong selective pressures through many generations. scientists have carefully considered and rigorously tested the observations listed above. when scientists offer a of these observations, they are making 1.) testable explanation, deductive explanation 2.) scientific interference, scientific law
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You open a jar that has been in the refrigerator for a couple of weeks and find the contents do not...
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