Is the biogeochemical cycle that describes the movement of oxygen within and between it's three main reservoirs.
a. oxygen cycle
b. carbon cycle
c. nitrogen cycle
d. water cycle

Oxygen Cycle

Explanation:

The bio-geo chemical cycles show the path or movement of any compound like water or element like carbon nitrogen or oxygen. These are the compound or elements essentially present in all living organism and many abiotic factors also.

So we study there transfer from one organism to another or transformation from one form to another.

So the cycle which demonstrate the movement of oxygen will be called as oxygen cycle.

air quality

poor drinking water

and heavy polution

can lead to poor health

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"