How much of each greenhouse gas is there in the atmosphere?

Answer 1

The predominant Green House gas is Water Vapor which makes up 2 to 5% of our atmosphere.

The second most common is CO2 which makes up 0.03% This is arguably up 0.007% over the past 150 years. It is also much lower today then in many periods in history.

The rest are in the parts per billion range.

Water vapor is the only one that is of consequence. The rest make up less forcing then the variance of water vapor.

Answer 2

The most abundant greenhouse gas in the atmosphere is carbon dioxide (CO2), making up about 410 parts per million (ppm). Methane (CH4) is the second most abundant greenhouse gas at about 1.9 parts per million, followed by nitrous oxide (N2O) at around 0.33 parts per million. Water vapor is also a significant greenhouse gas, but its concentration varies widely depending on location and weather conditions.

Answer 3

The atmosphere is approximately 80% Nitrogen and 20% Oxygen.

There is a small amount of Carbon Dioxide and other trace gasses.

Answer 4

15% of carbon dioxide but i dont know about the others