Potential answers for "About one percent of air "

⭐⭐⭐⭐ ARGON
⭐⭐⭐ AURA
⭐⭐⭐ MIEN
⭐⭐⭐ OXYGEN
⭐⭐⭐ IDAHO
⭐⭐ PILOT
⭐⭐ JETPLANE
⭐⭐ GASBAG

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