Cycles review!

To say that something is in a _____ means that it goes through a repetitive series of events or stages in a predictable and continuous manner.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

NGSS.MS-ESS2-4

NGSS.MS-ESS2-1

NGSS.MS-ESS1-1

Where is the "free" nitrogen in this diagram?

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NGSS.MS-LS2-3

Which 2 things are "fixing" nitrogen in this image?

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NGSS.MS-LS2-3

Fixed nitrogen is used to...

• build proteins and compounds

• build DNA

• build soil.

• build habitats.

Tags

NGSS.MS-LS2-3

Most nitrogen fixation is performed by...

• bacteria

• lightning

• plants

• people

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-1

Most organisms cannot use Nitrogen gas. This is called "Free" nitrogen. It must be fixed. What does this mean?

• combined with other elments.

• taped back together

• released into the atmosphere.

• fused to form a new element.

Answer explanation

Fixing nitrogen refers to the process of converting nitrogen gas (N2) into a form that can be used by living organisms. This process is known as nitrogen fixation and is carried out by certain bacteria and archaea. The nitrogen is converted into ammonia (NH3) or nitrate (NO3-) which can then be used by plants and other organisms to make proteins and other molecules. Nitrogen fixation is an essential process for life on Earth, as it is the only way for organisms to access the nitrogen they need to survive.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

In the ​ (a)   , nitrogen moves ​ (b)   into the soil, ​ (c)   , & back to the air.

• nitrogen cycle
• from the air
• into living things

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NGSS.MS-LS2-3

Nitrogen is a necessary building block that makes up ______ _____!

• living things

• tall structures

• soil compounds

• artificial intelligence

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NGSS.MS-LS1-1

Which choices on this diagram are adding carbon back to the atmosphere?

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

NGSS.MS-ESS3-4

Which thing on this diagram is using carbon to help make sugar?

Tags

NGSS.MS-LS1-6