The Flint water crisis began in 2014 when the drinking water source for the city of Flint, Michigan was changed to the Flint River. Due to insufficient water treatment, over 100,000 residents were pot.
Everyone in the world lives in a watershed. A watershed is a place where water goes/ flows after it rains. The water goes here because of hills or mountains.
Wolves helped are ecosystem because they changed the water( river, lakes, and oceans) They made environmental changes causing animals numbers to go up and have a good number of them all.