The Carbon Cycle and Human Impact
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Questions and Answers

What is carbon, in the context of the biogeochemical cycle?

  • A compound found only in living organisms
  • A byproduct of photosynthesis
  • A type of fossil fuel
  • An element that is the basis of life on Earth (correct)
  • What is the primary mechanism by which fossil fuels release stored carbon?

  • By reacting with oxygen in the atmosphere
  • By releasing carbon slowly over time
  • Through the process of photosynthesis
  • Through the process of combustion (correct)
  • What is a consequence of fewer plants on Earth?

  • The Earth's atmosphere becomes cooler
  • The rate of photosynthesis increases
  • More carbon dioxide is removed from the atmosphere
  • Less carbon dioxide is removed from the atmosphere (correct)
  • What is a result of increased carbon dioxide in the atmosphere?

    <p>An increase in global warming</p> Signup and view all the answers

    What is the primary source of carbon release into the atmosphere, according to the text?

    <p>The burning of fossil fuels</p> Signup and view all the answers

    Study Notes

    Carbon and the Carbon Cycle

    • Carbon is an element and the basis of life on Earth.
    • Carbon is found in rocks, oceans, and the atmosphere.

    Human Impact on the Carbon Cycle

    • Fossil fuels release stored carbon very slowly.
    • Burning fossil fuels and other organic materials releases additional carbon into the atmosphere.
    • This increased carbon dioxide in the atmosphere contributes to global warming.
    • With fewer plants, less CO2 is removed from the atmosphere.

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    Description

    Understand the basics of the carbon cycle, its importance in life on Earth, and how human activities like burning fossil fuels affect the environment and contribute to global warming.

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