Pathways of Energy and Matter in Ecosystems

In our experiment, how plants use carbon dioxide, what blue indicator solution did we add to the water that changes color when carbon dioxide is present?

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

The solution in the experiment went from blue to yellow because what was blown into it?

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NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the Nitrogen Cycle, nitrogen gas is _____, or changed, into forms of nitrogen that plants can use.

• mixed

• placed

• fixed

• labeled

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

The two types of fixed nitrogen that plants can use are ​ (a)   and ​ (b)   .

• nitrates
• ammonia
• zinc
• carbon

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NGSS.MS-LS2-1

Earth's atmosphere is about ​ (a)   nitrogen.

• 78%
• 54%
• 10%
• 99%

Nitrates and ammonia are returned to the soil in which two ways. (Choose 2)

• solid waste from animals

• rain comes down from the sky

• snow melts after winter

• when animals and plants die

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NGSS.MS-LS2-3

The cycling of carbon and oxygen through the environment depends of two processes--​ (a)   and ​ (b)  

• photosynthesis
• respiration.
• rock cycle
• metamorphosis

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NGSS.MS-LS1-6

Which organisms take in carbon from the air or water in which they live? (2)

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NGSS.MS-LS1-6

During respiration, oxygen is taken from the air or water, and carbon dioxide is released into the environment by which organisms?

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NGSS.MS-LS2-3

All land organisms use oxygen and release carbon dioxide during ​ (a)   .

• respiration
• photosynthesis
• osmosis