The content of the carbon dioxide in the air is 500 ppm(parts per million). What is the content of Oxygen in the air ?
300 ppm
From pie chart, we can see that the content of carbon dioxide is 25% which is equal to 500 ppm.
So, total gas present in the atmosphere = 500×10025 = 2000 ppm
Oxygen content is 15% = 2000×15100 = 300 ppm.