why is river not suitable for drinking although it looks very clean?(i need four points atleast)
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it has some mixed chemicals in it which are invisible.
it has hidden bacteria and viruses.
it is unsafe to drink as it is not filtered.
it has polluted water mixed in it from factories
it has hidden bacteria and viruses.
it is unsafe to drink as it is not filtered.
it has polluted water mixed in it from factories
Samirah1:
thanks :)
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