Are you more likely to find hydroelectric power in washington and oregon or on the great plains? and why?

Washington and Oregon receive much more of their electricity through hydroelectric means than would the Great Plains. These two states have numerous rivers that flow through it, allowing for it to be converted to electricity much easier than in the Midwest, which has much fewer rivers and smaller elevation changes that would make such conversions easier.

3. i would say one, but one is not prime nor composite.