Question

What is the second most common gas found in the air we breathe?

Answer 1

carbon?

Answer 2

http://microbemagic.ucc.ie/explore_body/air_composition.html What is Air Made Of?
The air you breathe is made up of lots of other things besides oxygen! Oxygen only makes up about 21% of air. About 78% of the air you breathe is made up of another gas called nitrogen. There are also tiny amounts of other gases like argon, carbon dioxide and methane. Plant and animal life on earth can’t survive without air.

Answer 3

so nitrogen ?

Answer 4

nope

Answer 5

nitrogen is the most common

Answer 6

okay thanks