Worksheet: The Carbon Cycle

In this worksheet, we will practice describing the key steps of the carbon cycle including respiration, photosynthesis, combustion, and decomposition.

Q1:

Which of the following is not a process by which carbon leaves the atmosphere?

  • ASeashells forming
  • BGases dissolving in seawater
  • CIndustrial carbon capture
  • DFuels combusting
  • EPlants photosynthesizing

Q2:

What name is given to an organism that releases carbon dioxide into the atmosphere by breaking down dead organic material?

  • AComposter
  • BCarbon dioxider
  • CScavenger
  • DDecomposer
  • EDecayer

Q3:

Carbon is not present in which of the following materials?

  • AFossil fuels
  • BBiofuels
  • CSeashells
  • DPlants
  • EQuartz

Q4:

Which of the following is not a process by which carbon enters the atmosphere?

  • AFuels combusting
  • BPlants and animals decaying
  • CSeashells forming
  • DPlants and animals respiring
  • EWeathering from acid rain

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