Select the INCORRECT statement regarding air.
A Air is a mixture of many gases like nitrogen (78%) , oxygen (21%) and others including carbon dioxide (1%) .
B Carbon dioxide is the gas that we breathe in.
C The oxygen in the air is required for burning things.
D When a balloon is overfilled with air, the air pressure inside becomes greater than
the air pressure outside and it bursts.
carbon dioxide is the gas that we breath out. not the gas that we breath in. oxygen is the gas that we breath in. so it is incorrect. that means the answer is b.