The Carbon Cycle
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Questions and Answers

Which process releases CO2 into the atmosphere?

  • Egestion
  • Photosynthesis
  • Feeding
  • Combustion (correct)

What is the result of the decomposition of soft body after death in molluscs and hard corals?

  • Release of CO2
  • Dissolution of solid structures (correct)
  • Formation of limestone
  • Neutralization of acidic conditions

Which process can negatively affect the survival of aquatic organisms?

  • Feeding
  • Egestion
  • Photosynthesis
  • Changes in pH (correct)

What is the primary source of carbon in limestone?

<p>Precipitation in neutral or alkaline conditions (C)</p> Signup and view all the answers

Which process involves the release of organic material through waste?

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

Which of the following is NOT an organic macromolecule that contains carbon?

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

Where is carbon found in the environment?

<p>Atmosphere (A)</p> Signup and view all the answers

What role do autotrophs play in the carbon cycle?

<p>Convert inorganic carbon dioxide into organic carbon compounds (C)</p> Signup and view all the answers

What happens when carbon dioxide from the air dissolves into water?

<p>Carbon dioxide forms carbonic acid and raises the pH of the aquatic environment (D)</p> Signup and view all the answers

Which compound is the most common type of carbon compound released into the atmosphere?

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

Which of the following is a common source of methane in the atmosphere?

<p>Combustion during cellular respiration (A)</p> Signup and view all the answers

What is the main component of natural gas?

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

What is the process of removing carbon dioxide from the environment and locking it up in a substance for an extended period of time called?

<p>Biosequestration (A)</p> Signup and view all the answers

What is the main component of limestone?

<p>Calcium carbonate (A)</p> Signup and view all the answers

What is the main disadvantage of burning peat as a fossil fuel?

<p>It disrupts sensitive wetland environments (D)</p> Signup and view all the answers

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