R; The Cycles of Life: Nitrogen, Carbon, and Phosphorus

What is the role of bacteria in the nitrogen cycle?

• Converting nitrogen gas into a usable form for plants

• Releasing carbon dioxide into the atmosphere

• Absorbing phosphorus from the soil

• Breaking down rocks to release phosphorus

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NGSS.MS-LS2-1

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Which cycle involves the exchange of carbon dioxide between the atmosphere, oceans, and living organisms?

• Carbon cycle

• Nitrogen cycle

• Phosphorus cycle

• Water cycle

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NGSS.MS-LS1-6

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How do plants obtain phosphorus?

• From the soil through absorption

• From the atmosphere through photosynthesis

• From nitrogen fixation

• From carbon dioxide

What can excessive use of fertilizers lead to?

• Pollution due to overabundance of nitrogen and phosphorus

• Increased carbon dioxide levels in the atmosphere

• Depletion of soil bacteria

• Enhanced weathering of rocks

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Why is it important to understand the nitrogen, carbon, and phosphorus cycles?

• To make informed decisions to protect the environment

• To increase industrial production

• To eliminate the need for fertilizers

• To stop the weathering of rocks

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NGSS.HS-LS2-3

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