Question

explain how is the percentage of Nitrogen gas maintained in the atmosphere​

Answer 1

Nitrogen is found in in many organic compounds so if the level of Nitrogen decreases then we use that compound

Answer 2

Answer:

The process of photosynthesis releases oxygen as a byproduct. Today Earth's lower atmosphere is a mixture of many gases called air. The maingases in air are nitrogen and oxygen, which together form about 99 percentof dry air by volume. The remaining 1percent is mostly argon and carbon dioxide.