Biology

Biology, 04.07.2019 12:30, whatnowb

Information obtained from the fossil record sets the background rate of extinction per year at species out of every million species.

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Biology, 30.06.2019 04:30, isabellemdeakin

Which of the following most accurately describes what can be seen in the fossil record? a. the fossil record shows every organism that has ever existed on earth and how each species developed from a previous species. b. the fossil record shows nothing useful about evolution or the history of life on earth because it is too incomplete. c. the fossil record shows that extinction is a modern phenomenon. no species went extinct prior to two hundred years ago. d. the fossil record shows species suddenly appearing and disappearing. when one species goes extinct, another one usually takes its place.

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Biology, 17.07.2019 15:30, jaz5380

Why should people be concerned about the extinction of a species? a. the extinction of a species is an opportunity for new species to emerge. b. the extinction of a species upsets the balance of ecosystems. c. the extinction of a species increases overall biodiversity. d. the extinction of a species can be reversed with captive breeding.

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Biology, 17.09.2019 03:30, chasadyyy

Over the past 400 years, humans have documented the extinction of more than species. this modern rate of species extinction is estimated to be the normal extinction rate seen in the fossil record.

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Biology, 06.10.2019 17:00, emilypzamora11

The fossil record clearly shows that the fossil record clearly shows that large complex organisms evolved long before simple. nearly all species that have existed in the past still exist today. all species evolve from pre-existing species. new species appear suddenly and fully differentiated, without an ancestral species. several different species can hybridize to produce a single new species

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