no plants on earth.\nno vegetation.
206158
oxygen free.  Life barren.  Real boring.
205254
What people are treating the earth how?  The earth doesn't need anything done about it.
660406
there would be ummm.... no fish?
607136
We came from primates(monkeys) before that lizards,fish,bacteria?,  could be anything, what didnt happen was that 2 people were put on a planet that took a week to "make".
569528
I think it's possible there are forms of life that are evolving so that they don't need water. \nA few millions of years ago, earth was contaminated with a new deadly poison. It's called Oxygen. It killed most of life on earth and new life forms evolved that actually us that poison and are dependent on it for lie. Maybe the same thing can happen with water.
46115
bacteria are prokaryotic(no nucleus)
88729
You have to remember plants did not cause the atmosphere to become oxygenic in the primordial days, cyanobacteria did. I'm guessing there are probably trillions of trees in the world.
325617
Simple: There is no God.
630760
Don't have to do anything. God never existed in the first place.
410293
They don't have any.\n\nZILTCH\n\n.
621801
rock, and the depth will be different wherever you decide to dig. there are even deserts that don't have any sand at all, just exposed rock and "normal" earth everywhere.
14209
Okay, first of all, the moon nor the sun are planets.  The first answer should sum it up.
408672
A human baby. And I'm as liberal as they come. Trees are of course important, whales less so - but they play a vital role. However; humans have rights, animals and plants (largely) do not.
301421
Plants.\n\nThey breathe in CO2 and breathe out Oxygen
223737
Environment.  Religion has nothing to do with our "survival", the environment does!
353190
Well, that's very interesting cuz if u think about it, if it's NOT alive but creates life (plants) than how could something dead create life???  How long could earth possibly live/survive without that glorious light?  Is the earth alive? Hmmmmmmmmmmm\n\nVery thought provoking, I'll have to put this question on my watch list!  It is an eternal source of power tho (like God).  So my answer must be yes than:o]
558681
Old age, the Earth will gradually become uninhabitable over a very long period of time until the time comes when the few million people that are left only have legends about how the planet once supported billions.\nNuclear war,  pandemics, possible global warming would be as hiccups along the way.