Arrange the words to make sentences meaningful
1.there / a / in / is / of / clean / country / shortage / water / this / clean
2.in / children / living / suffer / malnutrition / from / often / slums
3.serious / overpopulation / it / problem / isn't / a / is?
4.causing / is / more/ overpopulation / we / problems / can / imagine / than
5.is / main / causing / air pollution / reasons / the / one / of / overpopulation.
6.less / countryside / the/ traffic / there / air pollution / is / and / in
7.of / most / Mumbai / is / densely / the / cities / in / one / populated / the / world
8.problem / for / traffic / becoming / congestion / is /a / major / huge / many / cities.