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?

  • A Industrial carbon capture
  • B Plants photosynthesizing
  • C Fuels combusting
  • D Seashells forming
  • E Gases dissolving in seawater

Q2:

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

  • A Scavenger
  • B Composter
  • C Decayer
  • D Decomposer
  • E Carbon dioxider

Q3:

Carbon is not present in which of the following materials?

  • A Seashells
  • B Biofuels
  • C Fossil fuels
  • DPlants
  • E Quartz

Q4:

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

  • A Weathering from acid rain
  • B Plants and animals respiring
  • C Plants and animals decaying
  • D Fuels combusting
  • E Seashells forming

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