D. mixture
The air we breathe is a mixture of different gases, primarily nitrogen (about 78%) and oxygen (about 21%), along with smaller amounts of other gases such as argon, carbon dioxide, and trace gases.
A.
element
B.
liquid
C.
compound
D.
mixture
1 answer
D. mixture
The air we breathe is a mixture of different gases, primarily nitrogen (about 78%) and oxygen (about 21%), along with smaller amounts of other gases such as argon, carbon dioxide, and trace gases.