Potential answers for "About one percent of the atmosphere"

⭐⭐⭐⭐ ARGON
⭐⭐⭐ OXYGEN
⭐⭐⭐ NITROGEN
⭐⭐⭐ IDAHO
⭐⭐ ASIA
⭐⭐ SAHARA
⭐⭐ ESS

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