This is the most environmentally-friendly way to remove nitrogen, since nitrogen is released as nitrogen gas (N 2 ) which is naturally occurring (nitrogen gas makes up nearly 80% of the air we breathe).
(we; breathe; ) (nitrogen; is released; ) (nitrogen gas; makes up; nearly 80% of the air) Context(nitrogen gas makes up,List([146, 167))):(This; is; the most environmentally-friendly way to remove nitrogen)
nitrogen gas makes up,List([146, 167))
we nitrogen nitrogen gas This
breathe is released makes up is
nearly 80% of the air
the most environmentally-friendly way to remove nitrogen