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Helium is a byproduct of the radioactive decay of uranium-238 as it decays into various different elements into its final stable element: lead 206.

As it decays, the helium not only accumulates in the rocks themselves, but also escapes from them and accumulates in the earth's atmosphere.

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This presents a problem for those who claim "millions of years" for the age of oil, simply because rocks are porous.The gravitational pull between the Earth and Moon causes the Earths oceans to have tides.The tidal friction between the Earths terrestrial surface and the water moving over it causes energy to be added to the Moon.This results in a constant yearly increase in the distance between the Earth and Moon." "One cannot extrapolate the present 4 cm/year separation rate back into history.It has that value today, but was more rapid in the past because of tidal effects.

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