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Amiraneli [1.4K]

3 years ago

14

Although _[blank]_ makes up 78% of the Earth's atmosphere, it is not directly usable by most living organisms.

2 answers:

nekit [7.7K]3 years ago

7 0

Nitrogen gas is the answer.

Hope this helps.

svet-max [94.6K]3 years ago

3 0

Although <u>Nitrogen Gas</u> makes up 78% of the Earth's atmosphere, it is not directly usable by most living organisms.

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