natural resources

Front

Something that is renewable is

Back

something that can be used over again

Front

What does 'nonrenewable' mean?

Back

something that cannot be used over again

Front

Coal is

Back

nonrenewable

Front

Oil is

Back

nonrenewable

Front

Sunlight is

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renewable

Front

Wind is

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renewable

Front

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

Back

nitrogen fixation

Front

How much of the atmosphere is composed of nitrogen gas?

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78%

Front

Organisms that break down dead plants & animals and release nitrogen back into atmosphere...

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bacteria

Front

Organisms that need nitrogen to survive

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all living organisms