When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

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NGSS.MS-ESS2-1

Which one of these does not add CO2 to the atmosphere?

• cooking with gas
• planting trees
• burning wood
• riding in a bus

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NGSS.MS-LS1-6

What does not produce carbon dioxide?

• Photosynthesis
• Burning Fossil Fuels
• Animal respiration
• Plants decaying

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NGSS.MS-LS1-6

How do living organisms return carbon to the atmosphere in the carbon cycle?

• respiration and photosynthesis
•  decomposition and respiration

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NGSS.HS-LS2-5

In the carbon cycle, producers take in the gas __

• carbon dioxide
• oxygen
• nitrogen
• carbon monoxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

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NGSS.MS-LS1-6

What process occurs when coal (fossil fuel) is used for energy?

• Decomposition
• Combustion
• Pressurization 
• Respiration 

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NGSS.MS-PS1-2

NGSS.MS-PS3-4

Respiration is the process by which animals take in _____ and release _____. 

• photosynthesis, air
• carbon, oxygen
• oxygen
• oxygen, carbon dioxide

Which of the following are mainly cycled through the processes of photosynthesis and cellular respiration?

• carbon and sulfur

• carbon dioxide and oxygen

• carbon and nitrogen

• nitrogen and sulfur

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Forests are a carbon sink. This means that they...

• add carbon dioxide to the atmosphere

• remove carbon dioxide from the atmosphere

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3