Ar e sua composição – Ciências – 7º ano – Ensino Fundamental

The average composition of air is 78% nitrogen gas, 21% oxygen gas, and 1% other gases, mainly argon, carbon dioxide, and water vapor. ______________________________________________________________ Full content from Canal Futura is available on Futura Play, access it here: https://goo.gl/Quh7m5 Learn all about Canal Futura: https://goo.gl/qauKIZ Follow us on Twitter:   / canalfutura   Like our Facebook page: www.facebook.com/canalfuturaoficial ======================================== Watch on your TV: SKY – Channel 434 (HD) or Channel 34 NET and CLARO TV – Channel 534 (HD) or 34 VIVO – Channel 68 (HD) (and also on fiber optics on channel 24) OI TV – Channel 35