Beginnings of Life
Description
Life and photosynthesis start to thrive in the Archean Eon
More free lessons at: http://www.khanacademy.org/video?v=nYFuxTXDj90
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Life and photosynthesis start to thrive in the Archean Eon
More free lessons at: http://www.khanacademy.org/video?v=nYFuxTXDj90