Question

what would happen if there is 21 percent of nitrogen​

Answer 1

Answer:

What would happen if the atmosphere was 78% oxygen and 21% nitrogen? ... The risk of fires would increase a great deal, and this would reduce the amount of oxygen and increase CO2 considerably. This would likely lead to an increased greenhouse effect and greater plant growth.

Answer 2

What would happen if the atmosphere was 78% oxygen and 21% nitrogen? ... The risk of fires would increase a great deal, and this would reduce the amount of oxygen and increase CO2 considerably. This would likely lead to an increased greenhouse effect and greater plant growth.