When there are excessive microorganisms in the water that cause biodegradation there is
A. sharp rise in the dissolved oxygen content
B. sharp decline of dissolved oxygen content
C. refreshing odour to the water
D. loss of algal population
Answer:B
When there are excessive microorganisms in the water that cause biodegradation there is
A. sharp rise in the dissolved oxygen content B. sharp decline of dissolved oxygen content C. refreshing odour to the water D. loss of algal population