Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test Environmental Engineering Waste Water
The cyclic exchange of nutrient material between the living organisms and their non-living environment is called
1
physico-chemical cycle
2
biogeochemical cycle
3
biological cycle
4
More than one of the above
5
None of the above