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either one of these...a diagram showing how scientists think different groups of organisms are related.b.A branching tree is a diagram that shows how scientists think different groups of organisms are related. It is a metaphor used to describe the relationships between organisms, both living and extinct. Its use dates back to at least the early 1800s.
Extinct (Extinction)
By the way they look, (their bone structure, body weight) and DNA too.
so it does not get extinct
the dodo :}
Extinct.
No, biological species concept is NOT useful for extinct organisms at all, nor organisms that reproduce asexually; it is only useful for organisms that produce sexually.
alive
Aliens
A coelacanth is not part of a branching tree but a crossopterygian fish. As one time, it was thought the species was extinct until they found it off the coast of Africa in 1938.
Biogeography
d