Nutrient Cycles Keystone Biology

Identify the cycle pictured

• The Nitrogen Cycle

• The Water Cycle

• The Carbon Cycle

• The Phosphorous Cycle

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NGSS.MS-LS1-6

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

how do animals get the carbon they need?

• decomposing

• combustion

• eating plants

• breathing it in

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NGSS.MS-LS2-3

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 have humans contributed to the amount of carbon dioxide in the air?

• driving cars

• burning fossil fuels

• factories

• all of these

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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

identify the cycle pictured

• the water cycle

• the carbon cycle

• the nitrogen cycle

• the phosphorous cycle

where do animals get nitrogen from?

• from the soil

• from the water they drink

• directly from the air

• from the plants they eat