Evolution on earth
Evolution has resulted in living things that may be single-celled or complex, multicellular organisms. They may be plants, animals, fungi, bacteria, or archaea. This diversity results from evolution.
Source
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"OpenStax College, Introduction. October 16, 2013."
http://cnx.org/content/m44575/latest/Figure_19_00_01.jpg
OpenStax CNX
CC BY 3.0.
