Carbon Cycle Quiz
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Questions and Answers

Where does carbon originate from mainly?

  • Earth's atmosphere
  • Earth's biosphere
  • Earth's mantle (correct)
  • Earth's lithosphere

What is a major store of carbon in the lithosphere?

  • Decaying plant matter
  • Fish
  • Fossil fuels (correct)
  • Plankton

Which of the following is NOT a major carbon compound?

  • Sulfuric acid (correct)
  • Calcium carbonate
  • Methane
  • Proteins

What has caused the increase in carbon dioxide concentration in the atmosphere over the last 50 years?

<p>Burning of fossil fuels (D)</p> Signup and view all the answers

What is a significant role of carbon dioxide in the atmosphere?

<p>Regulation of Earth's temperature (A)</p> Signup and view all the answers

Where is carbon dissolved in ocean water primarily stored?

<p>Plankton (D)</p> Signup and view all the answers

Which of the following is NOT considered a major store of carbon on Earth?

<p>Biomolecules (D)</p> Signup and view all the answers

What form of carbon is found in fossil fuels like oil and coal?

<p>$C_{25}H_{52}$ (A)</p> Signup and view all the answers

What is a common form of carbon found in the atmosphere contributing to global warming?

<p>Methane (B)</p> Signup and view all the answers

Where does most of the carbon in the lithosphere exist?

<p>Limestone (C)</p> Signup and view all the answers

Which store of carbon on Earth includes living vegetation and decaying plant matter?

<p>Biosphere (B)</p> Signup and view all the answers

What is a common carbon compound found in organisms like proteins and DNA?

<p>Methane (D)</p> Signup and view all the answers

How is carbon mainly transferred from the Earth's mantle to the crust and atmosphere?

<p>By volcanic eruptions at plate boundaries (C)</p> Signup and view all the answers

Which process has led to the increase in carbon dioxide concentration in the atmosphere over the last 50 years?

<p>Fossil fuel use (A)</p> Signup and view all the answers

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