What happens when a wave reflects?
a. they are absorbed by the object they hit.
b. they travel through the object they hit.
c. they bend when they hit the medium.
d. they bounce off the object they hit.

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.