If all life on Earth went extinct would it return. Would species that went extinct come back after many years?

11 Answers

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  • Cowboy
    Lv 6
    4 weeks ago

    nope........................................................................................

  • 1 month ago

    It's possible that life could return, but it would probably not be exactly the same species. 

  • Anonymous
    1 month ago

    If truly all live went extinct it might take way over hundreds of years, maybe hundreds of thousands of years, for life to get going again.

    It took about a billion years after the Earth was formed for life to get going from nothing. It would possibly be quicker next time round.

  • Anonymous
    1 month ago

    No - it lacks the radiation causing mutation, to trigger evolution.

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  • Newton
    Lv 7
    1 month ago

    Extinction is forever. There were many different branches of the evolutionary tree that are called dead ends because they have no living descendants. For example, there were many lineages of arthropods in the Burgess Shale, a fossil site dated about half a billion years ago. Only a few of those lineages still exist. All the other lieages are gone forever. Similarly all dinosaurs are extinct (birds did not evolve from a dinosaur and they are NOT living dinosaurs) and they will not return. Your question is something like, can a living species evolve to be dinosaurs. The answer is no. Evolutionarily speaking, no one can go home again. Things have changed. We cannot go back to the original conditions that gave rise to the first dinosaurs. Their ancestors have become extinct. 

    Nevertheless, sometimes, when conditions are right, two animals can evolve to be very similar. For example, the placental wolf is very similar to the thylacine or marsupial wolf. Scientists call this convergent evolution, or the independent evolution of two similar organisms that have different ancestors. So, it would be possible that a living reptile may give rise to descendants that are very similar to dinosaurs, but those are not dinosaurs. If all life were extinguished, it is doubtful that life can evolve from non-living things again because the original conditions that allowed life to evolve are no longer around. once again, you cannot go home again. 

  • CRR
    Lv 7
    1 month ago

    No, because life cannot arise naturally from non living matter.

  • 1 month ago

    Extinction is forever. Google "Dollo's Law of the Irreversibility of Evolution".

  • 1 month ago

    No, they would not come back. Species come about because of random changes from previous species. If life had to start all over again ... (1) we don't understand the chemistry and biology of how life starts (but there are a few good ideas under discussion), and (2) there is no reason to think that new life forms would use the same DNA codes, much less be close to any of today's species.

    On the other hand, I would expect that life would fill the same ecological niches. So we would have analogs to today's bacteria, algae, mosses, plankton, etc.

  • Zirp
    Lv 7
    1 month ago

    As far as we can tell, no. Even if abiogenesis happened again, there is no prescribed course that evolution must take

  • Anonymous
    1 month ago

    It would depend on the reason all life ended in the first place. If the earth loses its orbit around the sun then nothing will come back. As far as something extinct coming back it probably wont happen since the atmosphere would have changed to much to support that type of life. The oxygen level was much higher when dinosaurs roamed the earth which allowed them to grow so large. 

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