Random question! trying to calm down after life today! does anyone else's cat steal your desk?! who else has a cat? and if you don't then do you like cats? what bread is your favorite?

30 a town is built on the banks of a small lake on the edge of a desert. after some time, the townspeople discover that water from the lake has become too polluted to use. describe one way that the lake may have been contaminated by the actions of the townspeople, and explain how the townspeople can remediate this problem.