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Carbon Cycle

Why is carbon important to us:

  • Carbon is essential to life on earth.
  • It is the fourth most abundant element in the universe after hydrogen, helium, and oxygen.
  • Every living organism needs carbon to sustain itself – about 18% of mass in our bodies is carbon.
  • The total amount of carbon on earth is fixed, we cannot create more carbon and we cannot destroy the existing level of carbon on earth.

What is the Carbon Cycle:

  • The carbon cycle explains how carbon is recycled between the atmosphere, plants and animals.
  • Plants absorb carbon dioxide during photosynthesis to produce food.
  • Animals eat plants and pass the carbon compounds down the food chain.
  • Animals breathe out carbon dioxide back into the air.
  • When plants and animals die, they decompose and carbon dioxide is again returned to the air.

carbon cycle infographic

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