Biology, 01.08.2019 00:50, hargunk329
The fossil record contains many examples of appearance; that is, fossils of organisms that appeared and remained in a specific location for extended periods of time. what is lacking in the fossil record are those small, incremental changes during speciation. in many cases, scientists have been unable to find these transitional forms. one reason for the lack of transitional fossils is that conditions must be just right for fossils to form. another explanation proposed by scientists is that species are generally stable and rarely change for millions of years. there is then a rapid burst of change, rather than the usual slow-paced evolution, that results in a new species and the transitional form leaves few fossils behind. this rapid change in species that rarely leaves behind fossil evidence is referred to as a) natural selection. b) adaptive radiation c) directional selection. d) punctuated equilibrium.
Answers: 1
Biology, 22.06.2019 16:00, jorgereyes01
Which statement describes the punctuated equilibrium theory?
Answers: 1
Biology, 22.06.2019 19:50, chjam265
Select the correct answer from each drop-down menu the images show fossils of a modern bird and two extinct organisms (a tyrannosaurus rex and an archaeopteryx). based on the structure of the three organisms, it can be concluded that the archaeopteryx and bird have wings, while dinosaurs have limhe se it can be concluded that
Answers: 3
The fossil record contains many examples of appearance; that is, fossils of organisms that appeared...
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