Gas making up over 20% of Earth's atmosphere - Crossword Clue

Crossword Clue Last Updated: 22/12/2021

Below are possible answers for the crossword clue Gas making up over 20% of Earth's atmosphere.

6 letter answer(s) to gas making up over 20% of earth's atmosphere

OXYGEN
  1. Oxygen - a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust

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