Question

Define oxygen cycle.
Define nitrogen cycle.

Please give the answer fast because I want submit my assignment​

Answer 1

Answer:

But in combination with oxygen or other elements, nitrogen is available to living organisms as a nutrient. The nitrogen cycle may be defined as the circular flow of nitrogen from free nitrogen gas in the atmosphere to nitrates in the soil, and, finally, back to atmospheric nitrogen.

Answer 2

A) Oxygen cycle :

The oxygen cycle is the biogeochemical cycle of oxygen atoms between different oxidation states in ions, oxides, and molecules through redox reactions within and between the spheres/reservoirs of the planet Earth is called oxygen cycle.

B) Nitrogen cycle :

he series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition is called nitrogen cycle.