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...and much less land, however once plants emerged from the ocean, they began to convert the Nitrogen from the air into cellulose, and as the dead plant matter mixed with the rock, eventually soil was created, which in turn allowed for more and more plant life to thrive. Later, amphibians along with the excrement of other land animals, added to the life-giving properties in the soil.

However, in a few hundred million, or perhaps a billion years, the soil will begin to overtake the water (H20), which is subject to being converted along with the Nitrogen in the air, into more & more solid matter. Eventually, the remaining water will begin to evaporate and dissipate, and the earth will resemble Mars, which appears to have once had oceans of water, and quite possibly life, but no longer...

Is this scenario, chemically, geologically and biologically possible, probable, or not?

2007-11-02 13:18:09 · 4 answers · asked by Anonymous in Science & Mathematics Earth Sciences & Geology

Pangea was only 300-400 million years ago, I'm talking about 3-4 Billion years ago...

2007-11-02 14:55:47 · update #1

4 answers

I am going with whatever you say. You are my better and my mentor and my vicarious thinker. Damn Man! Marry Me.

2007-11-02 14:13:34 · answer #1 · answered by Dovey 7 · 2 0

hmm your scenario makes quite a bit of sense so i'll just say a few things before deciding (ps my thought patterns are always at random hehe). well firstly, the reason why the earth started off as mostly water is because there was only one super continent(pangea) and of course youll have a super ocean (panthalassa). because of plate tectonics, the plates will separate and eventually come back into its super continent form. so its not really less of either one, theyre just being re-distributed. second, with all the glaciers melting if anything we'll have alot more ocean coming our way. Another thing is that the soil doesnt quite spread out in the way youre thinking (if im picturing this right) its more likely to form layers upon layers of itself. its also not only life forms that makes more soil you have to also imagine mountain ranges eroding down to fine particles to make more soil., however the soil itself will just form layers on top of old sediments. of course there are massive amounts of sediments in the ocean basins and along passive continental margins which can be attributed to eroded particles brought from rivers (called fluvial sands). however at active continental margins there is relatively no sediments. so there is always a balance keeping the amount of earth and water stable. Hmmm, i think its a good scenario but scientifically i doubt it would ever happen and i just succeeded in rambling on for about an hour ehehe

2007-11-02 21:03:35 · answer #2 · answered by marmazor 3 · 2 0

It doesn't sound quite right. I think there's been a fairly constant amount of water on the planet, some evaporates into space but some is outgassed by volcanos. The Earth will eventually get cooked by the sun when it goes to Red Giant state and then all the water and air will get boiled off into space. How sad. Our beautiful world will be a dead cinder. Maybe we will be inhabiting other worlds by then, or some life form from Earth will so that life can continue to exist, but our beautiful planet will be dead.

2007-11-02 21:00:49 · answer #3 · answered by jxt299 7 · 0 1

it was on a poster once, in our science class though. also yea science do say that

2007-11-03 00:15:54 · answer #4 · answered by 06700 2 · 1 1

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