The source of the nitrogen is primarily the atmosphere -- diatomic elemental nitrogen which makes up about 70% of the air we breathe -- and thus the sources for nitric acid are more diverse but include major inputs from utilities, industry, and automobiles.
(The source of the nitrogen; is primarily; the atmosphere) (diatomic elemental nitrogen; makes up; about 70% of the air) (the air; breathe; we) (the sources for nitric acid; are; more diverse) (the sources for nitric acid; include; major inputs from utilities, industry, and automobiles)
The source of the nitrogen diatomic elemental nitrogen the air the sources for nitric acid the sources for nitric acid
is primarily makes up breathe are include
the atmosphere
about 70% of the air
we
more diverse
major inputs from utilities, industry, and automobiles