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Type: Multiple-Choice
Category: Atmosphere
Level: Grade 8
Score: 6
Tags: composition of air
Author: tbossu
Last Modified: a month ago

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Atmosphere Question

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Grade 8 Atmosphere

What is the most abundant gas in Earth’s atmosphere? It makes up 78% of the gases.
  1. oxygen
  2. carbon dioxide
  3. argon
  4. nitrogen
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