How do waves change as they approach the shore?
a. the wavelength increases
b. the distance between the crest increases
c. friction along the top of the wave increases
d. the height increases

Which of the following situations best demonstrates the principle of separation of powers in the u.s. government? a. the president can veto laws passed by the legislature. b. the courts must approve constitutional amendments. c. states create their own educational policies. d. members of the legislature are elected by voters.