How Old Is The Earth?
Oct 30, 2014, 04:31 PM
How old is the Earth? The magic number is 4540.
http://www.bigworldlittleprofessors.com/2014/10/how-old-is-earth.html
#earth #geology #eon #solar system #dating #rocks
How old is the Earth? The magic number is 4540.
http://www.bigworldlittleprofessors.com/2014/10/how-old-is-earth.html
#earth #geology #eon #solar system #dating #rocks
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