Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test General Science Biology Ecology & Environment
Biological magnification refers to:
1
Concentration of insecticide(s) in animals
2
Concentration of organophosphate in plants
3
Photography in the laboratory
4
More than one of the above.
5
None of the above