Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Biology Biology in Everyday life
The prime contaminants for cultural or accelerated eutrophication are
1
Nitrates only
2
Phosphates only
3
Neither nitrates nor phosphates
4
More than one of the above
5
None of the above