Geochemical Cycle (Nitrogen)

What converts nitrogen gas into a usable form for plants and animals?

• bacteria

• rain

• fungi

• car exhaust

The process in which nitrogen circulates and is recycled is called

• The nitrogen cycle

• The carbon cycle

• The water cycle

• The phosphorus cycle

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NGSS.MS-ESS2-1

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How is nitrogen "fixed" into a usable form for plants?

• Through action of bacteria only

• Through lightning only

• Through action of bacteria and lightning

• Through photosynthesis

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NGSS.MS-LS2-3

How do animals get the nitrogen they need?

• From the air they breathe

• From the water they drink

• From the food they eat

• From the sun

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Gas that makes up 78% of our atmosphere.

• Oxygen

• Nitrogen

• Hydrogen

• Carbon Dioxide

Plants and animals cannot use nitrogen directly from the air.

• True

• False

According to this diagram, plants use nitrogen to make _________________________

• bacteria

• animals

• proteins

• decomposers

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NGSS.MS-LS2-1

NGSS.MS-LS2-3

According to this diagram, animals get proteins from eating ________________________

• decomposers

• bacteria

• plants

• sunlight

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What is the main reservoir of nitrogen?

• Water bodies

• Plants

• Atmosphere

• Soil

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NGSS.MS-LS2-3

how is Nitrogen fixed naturally ?

• Volcanic activity

• Lighting

• Greenhouse gases

• bacteria

• Fungs

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NGSS.MS-LS2-3