plz answer 21 no.questions plz.it important.
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the advantages are as follows:-
1. They are the purest form of water and do not get polluted easily.
2. As they are found deep in the earth, they are not evaporated in summers.
1. They are the purest form of water and do not get polluted easily.
2. As they are found deep in the earth, they are not evaporated in summers.
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thanks you so much rahul......:)
your welcome pranjal !
okk :)
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