NC Biology Essential Standard 2.1

How does carbon dioxide leave the atmosphere and become part of the food chain?

• through transpiration

• through photosynthesis

• through factory emission

• sunlight

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

What role do animals play in the carbon cycle?

• absorb carbon dioxide from the atmosphere

• give off carbon dioxide through respiration

• combustionm

• decomposing matter

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NGSS.MS-LS2-3

What is one way that carbon dioxide can be put back into the atmosphere?

• sunlight

• burning of fossil fuels

• ocean currents

• rain

What role do decomposers play in the carbon cycle?

• absorb carbon dioxide

• release carbon dioxide into atmosphere

• return carbon into the soil

• combustion

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NGSS.MS-LS2-3

How does nitrogen become part of the food chain?

• through transpiration by plants

• through uptake of nitrogen compounds in the soil by plants

• through factory emission and combustion of fossil fuels

• sunlight changes nitrogen into usable forms

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NGSS.MS-LS2-3

Nitrogen in the atmosphere is not available. Free nitrogen has to be changed into a usable form in a process called ____

• nitrogen fixation

• transpiration

• photosynthesis

• cellular respiration

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NGSS.MS-LS2-3

NGSS.MS-LS2-1

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

A particular golf course is using large amounts of nitrogen fertilizer. What process could move this nitrogen into a local stream?

• volatilization
• nitrogen fixation
• runoff
• ammonification

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NGSS.MS-ESS3-4

In eutrophication, what directly causes the death of fish?

• The plants use up oxygen in respiration

• The fish are poisoned by high CO₂ levels

• Bacteria use up oxygen in respiration

• The fish use up oxygen in respiration

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NGSS.MS-LS2-4

Eutrophication is defined as a change that occurs to an aquatic ecosystem. This change is mainly due to what?

• Newly introduced fish

• Depletion of the ozone layer

• Increased nutrient concentration

• Increase in atmospheric carbon dioxide.

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NGSS.MS-LS2-3

NGSS.MS-LS2-1

NGSS.MS-LS2-4