Question

Carbon dioxide makes up about _________ of air.

Answer 1

• Carbon dioxide (CO₂) makes up about 0.03% of air.
• other gases like nitrogen (78%), oxygen (21%), inert gases (1%)
• Carbon dioxide plays a very important role photosynthesis process.
• Carbon dioxide gas is added to the atmosphere by respiration or burning of fuels.

Therefore, carbon dioxide makes up about 0.03%of air.