Back غاز نزر Arabic Spurengase German Gas traza Spanish گاز کممقدار Persian Gaz à l'état de traces French Sporengas NDS Spoorgas Dutch Gás traço Portuguese Khí vi lượng Vietnamese
Trace gases are gases that are present in small amounts within an environment such as a planet's atmosphere. Trace gases in Earth's atmosphere are gases other than nitrogen (78.1%), oxygen (20.9%), and argon (0.934%) which, in combination, make up 99.934% of its atmosphere (not including water vapor).
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