Carbon & Nitrogen Cycle

Which of the following add carbon dioxide to the atmosphere?

• volcanoes
• combustion of fossil fuels
• animal and plant respiration
• all of these

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NGSS.HS-LS2-5

NGSS.HS-ESS2-6

NGSS.HS-LS1-7

What is happening at 1?

• respiration: releasing CO₂
• decomposing CO₂ in the soil
• photosynthesis: absorbing CO₂
• turning CO₂ from the atmosphere into organic molecules

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

How much of the atmosphere is composed of nitrogen gas?

• 87%
• 38%
• 78%
• 21%

How nitrogen is "fixed" into useable form for plants

• only through action of bacteria
• only through lightning
• through action of bacteria & lightning
• through photosynthesis

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NGSS.MS-LS2-3

Nitrogen fixing bacteria, lives in nodules on the root of a plant called

• Broccoli
• Legumes
• Beats
• Carrots

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NGSS.MS-LS2-1

NGSS.MS-LS1-5

NGSS.MS-LS2-4

What does NOT produce carbon dioxide?

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

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NGSS.MS-LS1-6

Combustion is another word for __________.

• Transportation
• Respiration
• Fossil Fuels
• Burning

Carbon can be found in...

• The atmosphere
• Soil
• Fossil fuels
• All of the above

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

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NGSS.MS-LS1-6

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

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

Tags

NGSS.HS-LS2-5

NGSS.HS-LS1-7