Pollution crisis
Air pollution
Air pollution caused by dust, smoke, gas, rain water which had naturally pure. The current may be several toxic air pollution like rain coming down through the air. Rain water is toxic too. I fall to the ground may be more toxic when inflows in the field of agricultural fertilizers or pesticides. If water is flowing into the river may be more toxic because of industrial waste. And the problem is that residential drinking water and cooking may be a toxic thyroid disease such as cholera.