The pollution in a watershed have such a heavy impact on its inhabitants because the water combines and the pollutants become more concentrated.
Pollution is defined as the introduction of harmful material to the environment. These harmful material is called pollutant.
Pollutant can be natural such as volcanic ash. They can also be created by human effect.
There are four types of pollution
Thus, the pollution in a watershed have such a heavy impact on its inhabitants because the water combines and the pollutants become more concentrated.
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