Carbon Cycle Worksheet

Which process in the carbon cycle is responsible for removing carbon dioxide from the atmosphere and converting it into organic compounds?

• Photosynthesis

• Respiration

• Decomposition

• Fossil fuel combustion

Tags

NGSS.MS-LS1-6

What is the main way that carbon returns to the atmosphere from animals?

• Animal respiration

• Photosynthesis

• Decomposition

• Carbon fixation

Which process in the carbon cycle involves the breakdown of dead organisms, releasing carbon back into the soil and atmosphere?

• Decomposition/decay

• Photosynthesis

• Respiration

• Combustion

Tags

NGSS.MS-ESS2-1

What human activity is shown as a major contributor to carbon dioxide in the atmosphere in the carbon cycle diagrams?

• Fossil fuel combustion

• Photosynthesis

• Animal respiration

• Carbon fixation

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

In the carbon cycle, what is the role of phytoplankton in the ocean?

• They perform photosynthesis and help remove CO2 from the atmosphere.

• They decompose organic matter.

• They burn fossil fuels.

• They form sedimentary rocks.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the main purpose of the carbon cycle in nature?

• To circulate water throughout the environment

• To move carbon through different parts of the ecosystem

• To produce oxygen for animals

• To break down rocks into soil

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which process in the carbon cycle removes carbon dioxide from the atmosphere?

• Respiration

• Combustion

• Photosynthesis

• Decomposition

Tags

NGSS.MS-LS1-6

What is the carbon-containing product produced by green plants during the carbon cycle?

• Carbon dioxide

• Carbon compounds in animals

• Carbon compounds in green plants

• Dead plants and animals

Tags

NGSS.MS-LS1-6

Which process in the carbon cycle involves burning and is often missing from simple diagrams?

• Photosynthesis

• Respiration

• Combustion

• Decomposition

Which of the following is NOT a process that adds carbon dioxide to the atmosphere?

• Respiration

• Combustion

• Photosynthesis

• Decomposition

Tags

NGSS.MS-LS1-6