Related Questions

For existence of aquatic life in water, the dissolved oxygen content in it, should not be less than __________ ppm.
In order to protect the aquatic creatures, the dissolved oxygen content in fresh water stream should never be less than __________ PPm.
The relative stability of a sewage sample, whose dissolved oxygen is same as the total oxygen required to satisfy BOD, is
What environmental issue involves the excessive use of fertilizers and run-off chemimls into bodies of water. causing oxygen depletion and harm to aquatic ecosystems?
For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed
Presence of __________ in water stream are deleterious to aquatic life.
If a person can save TK.380 in 5 weeks, in how many weeks, at this same rate, can the person save 2.6 times amount ?
If Mr. Azad can save Tk. 380 in five weeks , in how many weeks m at this same rate, can he save 2.6 times of this amount?
save ও save as অপশন দুটি ওয়ার্ডের কোন বাটনের অপশন?
The correct relation between theoretical oxygen demand (TOD), Biochemical oxygen demand (BOD) and Chemical oxygen demand (COD) is given by