Biology Carbon, Nitrogen, Climate Change, Biodiversity #1

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

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

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

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-LS1-6

NGSS.MS-LS2-3

Using fossil fuels is a safe for the environment. 

• True
• False

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NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

Organisms that need nitrogen to survive

• only plants
• only animals
• only bacteria
• all living organisms

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NGSS.MS-LS2-1

Organisms that play a role in the nitrogen cycle

• only plants
• only animals
• only bacteria
• plants, animals, & bacteria

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NGSS.MS-LS2-3

Plants and animals need nitrogen to make __________.

• Protein
• Carbohydrates
• Lipids
• Nucleic Acids

When nitrogen gas is turned in to a form that plants and animals can use is called 

• Combustion
• Photosynthesis
• Decomposition
• Nitrogen Fixation

How do  animals get nitrogen?

• the atmosphere 
• eating other organisms
• bacteria
• lightning