Заглавная буква исключительно для того, чтобы обратить внимание на исправление.
1) one of the bigGest
2) don't have enoUgh clean
3) children die becAuse they
4) they drink poLluted water
5) dumping indUstrial and nuclear
6) they get heAlth problems
7) lakes are also poisonEd
8) because factorIEs produce
9) water of our planet cleAn it
10) and do not pollutE it