CBSE Class 9 Biology Biogeochemical Cycles

Q.

Carbondioxide is utilised during



Q.

The metabolic reduction of nitrate into nitrogen is known as



Q.

During combustion,



Q.

In a 100-year period, how long does water stays in the atmosphere?



Natural Resources - Exam Decoded 3

Cyclic flow of nutrients in four biogeochemical cycles namely, water cycle, nitrogen cycle, carbon cycle, and oxygen cycle.