• The biosphere is the part of Earth, including the air, land, surface rocks, and water, where life is found.
  • Parts of the lithosphere, hydrosphere, and atmosphere make up the biosphere.
  • The Gaia hypothesis states that theBiosphere is its own living organism.
  • The hypothesis suggests that the Earth is self-regulating and tends to achieve a stable state, known as homeostasis.
  • When carbon dioxide levels increase in the atmosphere, plants grow more quickly.
  • As their growth continues, they remove more carbon dioxide from the atmosphere.
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