According to the transparency how is nitrogen returned to the atmosphere

According to transparency, nitrogen is returned to the atmosphere through a process called denitrification.

The process goes as follows:
Ammonification: This occurs when the decomposers break down the the wastes of the organisms and release the nitrogen that these organisms contained in the form of ammonia
Nitrification: This occurs when the ammonia is oxidized into nitrites which further oxidize into nitrates by the bacteria in the soil
Denitrification: This occurs when anaerobic bacteria break down these nitrates, thus, producing nitrogen into the atmosphere.

Deposition is the transition of matter going from gas to solid without passing through the liquid phase.a.) gas—-> solid