Question

The atmosphere is a mixture of gases. It is mostly composed of _____. oxygen and carbon dioxide nitrogen and oxygen carbon dioxide and water vapor nitrogen and carbon dioxide

Answer 1

The atmosphere is mostly composed of oxygen and nitrogen. Nitrogen accounts for approximately 78% of the atmosphere and oxygen accounts for 21%. Argon accounts for around 0.9% Other gases such as methane, carbon dioxide, water vapor and ozone can be found in trace amounts.