Extinction

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  • CAUSES OF EXTINCTION
    • new competitors take all of a resource, e.g. food or territory
    • new diseases kill all individuals
    • new predators eat all individuals
    • changes to environment over millions of years (geological time)
      • organisms can't adapt fast enough to changes
    • single catastrophic event
      • e.g. asteroid collides with Earth
      • e.g. massive volcanic eruption
  • Extinction is when all individuals of a species die out

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