The Carbon Cycle Overview
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Questions and Answers

What process do autotrophs use to convert light energy into chemical energy?

  • Protein breakdown
  • Cellular respiration
  • Photosynthesis (correct)
  • Lipid synthesis
  • How do plants return a significant amount of carbon back into the atmosphere?

  • Via cellular respiration (correct)
  • Through nitrogen fixation
  • By forming lipids
  • By storing carbon as proteins
  • What is the main energy source for detritivores?

  • Photosynthesis
  • Nitrogen fixation
  • Protein synthesis
  • Cellular respiration (correct)
  • Which process leads to the formation of calcium carbonate exoskeletons in coral reefs?

    <p>Calcification</p> Signup and view all the answers

    Where is the largest pool of carbon in the world located?

    <p>Deep ocean sediments</p> Signup and view all the answers

    What is the primary source of usable carbon for plants in the carbon cycle?

    <p>Carbon dioxide in the atmosphere</p> Signup and view all the answers

    How does the global nature of the carbon cycle differ from the nitrogen and phosphorus cycles?

    <p>Carbon cycle is influenced by local concentrations on land</p> Signup and view all the answers

    Why can changes in local levels of nitrogen and phosphorus have major consequences for ecosystems?

    <p>Local levels of nitrogen and phosphorus directly impact ecosystem health</p> Signup and view all the answers

    How do consumers primarily obtain their carbon in the carbon cycle?

    <p>From eating other organisms</p> Signup and view all the answers

    What distinguishes carbon from other essential elements regarding its usage by living organisms?

    <p>Carbon is used for energy storage, transfer, and usage</p> Signup and view all the answers

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