Star Fish

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A short YouTube video by Hank Green provides an easily understood run down of evolutionary adaptations. Green gives examples of evolutionary traits in starfish, octopi and humans. For starfish, Green uses the evolution of the starfishes’ eyes. Some species of starfish have evolved eyes that allow them to find food more easily than those species that have evolved without them. Green also relates how some octopi have evolved with copper and the protein hemocyanin in their blood which combine to make oxygen transport more efficient. This enables the octopus to acclimate more readily to nearly any oceanic environment. Green’s final example of evolution is how humans, over many generations, have evolved immunity to various diseases.
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