What is one environmental issue facing pakistan, india, and bangladesh?

volcanic activity
or
water pollution

Water pollution is the major issue facing these countries. most of the waste material is thrown into the running water like rivers and canals. that pollutes not only the drinking wate but also the erigation water which inturn pollutes the agricultural products whcih in turn are damaging for human biengs.

Answerhave flowing water either episodically or during only a portion of the year;