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Nitrogen Cycle

Authored by Nikole Grant

Science

7th Grade

Used 1+ times

Nitrogen Cycle
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The process in which nitrogen circulates and is recycled is called

The nitrogen cycle

The carbon cycle

The water cycle

The phosphorus cycle

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image

How much of the atmosphere is composed of nitrogen gas?

87%
38%
78%
21%

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

bacteria

rain

fungi

car exhaust

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

This can transform nitrogen in the atmosphere into a usable form of nitrogen

rain

ice

lightning

sun

5.

MULTIPLE SELECT QUESTION

20 sec • 1 pt

Where can nitrogen fixing bacteria be found (2 right answers)

Free living in the soil

under the leaves of flowering plants

in the atmosphere

living on the nodules of certain plants

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Round structures on the roots of certain plants

lichens

commensals

cataracts

nodules

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is the role of denitrifying bacteria

change nitrate back into nitrogen gas

change nitrogen gas into nitrate

absorb carbon dioxide in the soil

release oxygen gas into the atmosphere

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