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01-04-2015
Social Studies

contestada

Which gas makes up 78 percent of Earth’s atmosphere?

oxygen

nitrogen

hydrogen

carbon dioxide

inert gases

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Аноним Аноним

01-04-2015

Nitrogen is the gas that makes up 78% of Earth's atmosphere. Oxygen makes up 21% of the Earth's atmosphere.

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Аноним Аноним

01-04-2015

the answer is nitrogen it = 78% of earths atmosphere

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