Question

Which is the main source for a vast reservoir of relatively inert nitrogen in atmosphere?

Answer 1

By far the largest reservoir of totalnitrogen on Earth is the dinitrogen gas (N2) in the atmosphere (Table 4.1). N2 is also the major form of nitrogen in the ocean. The most abundant form ofnitrogen in soils and marine sedi- ments is organic nitrogen, produced by biological processes

Answer 2

it comes from degradation of plant bodies and from industrial sources .It is not Purely inert sometimes reacts with oxygen to form nitrogen oxide sulphur to form hydrogen sulphide and with the hydrogen to form nitrogen hydride