Nitrogen Cycle Grade 5

Can living things use nitrogen gas as is?

• No

• Yes

What is nitrogen Fixation?

• When we solve a problem that nitrogen has

• Fixing nitration because it has horrible attitude

• Changing oxygen from a form that we can't use to a form that we can use

• Changing nitrogen from a form that we can't use to a form that we can use

Why is nitrogen very important for all living things ?

• It allows living things to produce/have glucose to survive

• It allows living things to produce/have proteins to survive

• Because all living things need to breath Nitrogen gas

• It allows living things to produce/have water to survive

What is the largest reservoir that contains about 78% of all N2?

• Atmosphere

• Plants

• soil

How much of the atmosphere is composed of nitrogen gas?

• 87%
• 38%
• 78%
• 21%

Tags

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Organisms that need nitrogen to survive

• only plants
• only animals
• only bacteria
• all living organisms

Tags

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The process in which Nitrogen circulates and is recycled is called ____________

• The nitrogen cycle
• The water cycle
• The carbon cycle
• Nitrogen Fixation 

Tags

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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

Tags

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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

Tags

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According to this diagram, plants use nitrogen to make _________________________

• bacteria

• animals

• proteins

• decomposers

Tags

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