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  • 2. The Living World: Biodiversity
  • 38 Keystone Species

38 Keystone Species

Why are keystone species important?

  • Keystone species and their role in the ecosystem
  • Some animals are more equal than others: keystone species and trophic cascades
  • 3D model: Sea otter

Return of gray wolves

  • Trophic cascades in Yellowstone: The first 15 years after wolf reintroduction Teacher Resource

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