C-02-Q305mediumsingle_mcq
Mohibullah renovated a pond and tested natural food using a Secchi disk. The required dissolved oxygen per litre of pond water for fish farming is —
Mohibullah renovated a pond and tested natural food using a Secchi disk. The required dissolved oxygen per litre of pond water for fish farming is —
- a2 mg
- b3 mg
- c5 mg
- d7 mg