Complete the statements using the drop-down menus. The biggest difference between a motor and a generator is that, in a motor, current passes a power source, through the brushes, then the commutator. In a generator, current passes the slip rings, through the brushes, a device where the electricity is collected.

The smokey mountains have over 2,100 miles of rushing mountain streams and rivers that flow through the park. in each mile lives a diverse community of native fish, amphibians, insects, and larvae, some of which are found only in the southern appalachians. park managers and scientific researchers test many factors such as fish populations, the watersheds and water tests to determine a) too many lizards are present b) the water quality of the stream c) rainwater is running into local streams d) if visitors to the park are overstaying their welcome