1. what is the source of the statistics mentioned on the image?
2. Dev the three most populated Indian rivers.
3. Europe 'sewage ditch ' is the name given to______ river.
a) seine
b) Rhine
c) po
4. 50 % of the world population is residing around _____ river basins
a)200
b)215
c)250
5. what is the cause of pollution of the Scandinavian rivers.
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i did nt undersand sorry
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