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  4. Oxygen makes up about 21% of Earth's atmosphere; this element dominates at 78%

Oxygen makes up about 21% of Earth's atmosphere; this element dominates at 78%

Since you have landed on this page then most probably you are looking for the Oxygen makes up about 21% of Earth's atmosphere; this element dominates at 78% answer. This question was last seen on April 15 2022 Jeopardy TV Game Show.

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For more questions from this episode visit Jeopardy April 15 2022 Answers