Question
Question: Measurement of rate oxygen utilisation by a unit volume of water over a period of time is to measure...
Measurement of rate oxygen utilisation by a unit volume of water over a period of time is to measure :
A
Fermentation
B
Biogas generation
C
Biosynthetic pathway
D
Biological oxygen demand.
Answer
Biological oxygen demand.
Explanation
Solution
The presence of fertilizers and household wastes in water enhances the growth of algae. This algae cover the surface of water and reduces the oxygen concentration in water, thus fishes die in water bodies due to the lack of oxygen gas.