Question

How is pollution of rivers caused in the northern plains

Answer 1

pollution is causing by releasing toxics into river and mixing the ashes of passed away's.

Answer 2

we know that the northern plain is situated in north. in the northern area the population is increasing. in the north there is ice it will Brock and fall into the sea then it changes as water imagine when all the ice will broke an fall down and changes into water it will cause flood