• All biomes have populations of interacting species.
  • Species interact in the same basic ways in all biomes.
  • For example, some species that prey on others for food.
  • Predator-prey relationships account for most energy transfers in food chains and food webs.
  • Some predator species are known as keystone species.
  • Major changes in the numbers of a keystone.
  • species affect the populations of many other species in the community.
  • In this video by Science Friday, Marine scientists John Bruno and Elizabeth.
  • Selig describe the effects of local Marine Protection Areas on preserving coral.
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