Question

The proportion of carbon dioxide in the atmosphere is about ______.

Answer 1

Atmosphere

• The Earth's atmosphere is made up of a variety of gases.
• The atmosphere of the earth is composed of nitrogen $(78\%)$, oxygen $(21\%)$, argon $(0.9\%)$, carbon dioxide$(0.03\%)$, and trace gases.

• Hence, the proportion of carbon dioxide in the atmosphere is about $0.03\%$.