• Biological organization exists at all levels in organisms.
  • Single celled prokaryotes and eukaryotes show order in the way their cells are arranged.
  • Single-celled organisms such as an amoeba are free-floating and independent-living.
  • Multicellular organisms carry out their life processes through division of labor.
  • Scientists think that multicellularity arose from cooperation between many organisms of the same species.
  • The Colonial Theory proposes that this cooperation led to the development of a multice cellular organism.
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