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Destroying all lifeforms

  1. Sep 25, 2004 #1
    What would happen if we destroy all the life forms on earth :surprised ?
    Then we grow the trees and plants and some organisms(somelike dogs and cats could be replaced by robots ) which are necessary only for out survival?
    We could mark the amzon forest and other tropical areas reserved for forests and remove all humas from there.

    Bring water from Mars.
    Pollute seas and rivers.
    Or we could pollute some oceans and leave others clean?
    And create inland reservoirs for water.
     
    Last edited: Sep 25, 2004
  2. jcsd
  3. Sep 25, 2004 #2
    Some one answer it plz.
     
  4. Sep 25, 2004 #3

    Moonbear

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    If you destroyed all life forms, wouldn't that include us and all these plants and organisms you want to grow? Nature is a pretty delicate balancing act. Eliminating even one species can have a chain reaction on many species.

    What water on Mars? We have plenty of water on Earth anyway, so why try to find another planet to obtain it?

    Huh?

    All the oceans are interconnected, so what you dump into one eventually gets to all of them. Why not just try to stop polluting instead of deciding to just selectively pollute?

    We already have inland reservoirs for water.
     
  5. Sep 25, 2004 #4

    Nereid

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    If all life forms on Earth were destroyed - an extraordinarily difficult thing to do by the way, there are bacteria living quite happily more than 10 km beneath the solid rock surface of ancient continental plates (e.g. Australia, Greenland) - the atmosphere would change (e.g. oxygen disappear), the average temperature would probably drop, weathering of rock would decrease (but the details would include great variation), ... and sometime before the Sun goes red giant, life would start all over again on Earth (whether from spontaneous abiogenesis or panspermia, who knows?).
     
  6. Sep 25, 2004 #5
    No
    We plant trees in specific areas to give oxygen
     
  7. Sep 26, 2004 #6

    Moonbear

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    chound, you're being inconsistent. You are asking what will happen if we destroy ALL life forms, but then have trees spared for planting. Trees are a lifeform, so presumably you aren't destroying everything.

    Trees also benefit from the nitrogen-producing bacteria in the soil, along with the other bacteria that break down the dead leaves back into other nutrients for the soil. Many require animals to carry their seeds (and deposit the seeds in a nice pile of fertilizer). Worms help aerate the soil. Insects and birds carry pollen the trees need for reproducing. You can't eliminate everything except the trees and expect the trees to survive.
     
  8. Sep 26, 2004 #7

    Chronos

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    Er, the earth would be another lifeless sphere floating in the void? Spontaneous abiogenesis would probably resume and probably on a more rapid timeline.
     
  9. Sep 26, 2004 #8

    selfAdjoint

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    But the Earth now has an Oxygen bearing atmosphere, whereas the original prebiotic Earth did not. Surely that will affect the pace of biogenesis? Whether to accelerate, retard, or fully prevent, who can say?
     
  10. Sep 26, 2004 #9
    We can mechanically control all the proceses like areating theground, fixing nitrogen?
     
  11. Sep 27, 2004 #10

    Moonbear

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    No, we don't currently have any way mechanically (or in any other way) replicate all those process. Why would we want to do that anyway when nature does a pretty good job of it already?
     
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