alleryWhich of these does sand filtration struggle most to remove from water?
ABacteria
BViruses
CProtozoa
DAlgae
Answer & Solution
Correct answer: B. Viruses
1. Sand filtration treats water by passing it through sand.
2. It is very effective against protozoa and bacteria.
3. It struggles to remove viruses.
_Source: Wikipedia, Water conservation, Water reuse_
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