which process removes bad odour of water and increases oxygen content in it
a. filtration
b. sedimentation
c. settling
d. Aeration
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Answer:
Filtration:
Explanation:
The sizes of the microbes are especially important for their removal by sedimentation and filtration. Viruses are the smallest waterborne microbes (20 to about 100 nanometers in size) and the most difficult to remove by filtration and other size exclusion methods.
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