Which substances accounts for nearly 80 percent of earths atmosphere?

1 Answer
Fardeen F.
Feb 26, 2018

Nitrogen

Explanation:

The most abundant gas in our atmosphere is Nitrogen.
This is because plants and animals are constantly decomposing. Bacteria and other decomposers then break it down into Nitrogen . There is so much because Nitrogen is pretty stable in earths atmosphere and dosent change much.

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