For the most part, they aren't. Elements (atoms) are formed in the cores of stars, or in supernova explosions.
There are some exceptions. We've manufactured a lot of plutonium -- a lot more than we need, in fact. But 99.999+% of the atoms on earth were formed in either (A) the Big Bang (the hydrogen in the oceans, some helium), (B) stars' cores, or (C) supernovae.
2007-04-24 01:21:58
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answer #1
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answered by Skepticat 6
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Earths interrior is the source of all the elements present on or bellow the surface of earth. Magma released solidifies to various elements after cooling and condensation
2007-04-25 10:11:18
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answer #2
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answered by ba_bhat 1
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The elements were formed in stellar explosions. The only new elements we get here are because of nuclear decay.
2007-04-24 07:48:31
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answer #3
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answered by Gene 7
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I thought we have all the elements we will ever have- like water,... In the Big Bang Theory it says that..i think
2007-04-24 07:44:59
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answer #4
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answered by Gangsteer 3
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They aren't.
They are formed in stars.
Heavier elements are formed in stellar explosions such as supernovae.
2007-04-24 07:41:32
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answer #5
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answered by Anonymous
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thy r formd by various activities tht tke place on d earth ..
der r plenty ov thns goin on which v ppl cant even imagine !!
2007-04-24 11:18:09
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answer #6
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answered by farzana 2
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