After the dinosaurs became extinct, why didn't they evolve again? Why did humans evolve instead?

Question

i meant why didn't dinosaurs come to existence again, like they did the first time, out of nothing?

surely the conditions that brought them into existence were the same after the extinction?

Answer 1

natural selection, the worlds climate changed and favored animals that can stay warmer, such as birds and mammals. Even though birds are the decedents of dinosaurs.

Answer 2

Humans evolved from an entirely different line from the dinosaurs.

When you consider anything as complex as dinosaurs, the chance of having the same thing evolve again are incredibly high. It's sort of like getting the same bridge hand twice in a row, only much less likely. Look up Dollo's Law of the Irreversibility of Evolution.

Answer 3

natural selection? things evolve and the strongest survive

Answer 4

How can you evolve when you are extinct?

God help us all!!

Answer 5

Life on our planet didn't start with dinosaurs.  They evolved

from other things.  As did we.  If you need to be told how we

came to be let me suggest the works of H.P. Lovecraft and

that genre; my point is that it ain't over until the fat lady sings so enjoy some bedroom reading while we wait for any new

developments.

Answer 6

Everything in space has its place and his time. Basic law of universe is the evolution into higher states. The time of the dinos was over after their climax. And the time of humans may be over, if there will be no qualitative progress.

Answer 7

Dinosaurs did not become extinct, birds are their direct descedants.