Most of the nitrogen gas in earths atmosphere comes from ?

Breakdown of Carbon Dioxide

Explanation:

Had this question on a test, and the answer was "The Breakdown of Carbon Dioxide"

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.