Sound wave is a pressure caused by the vibration of something in a medium that transfers anergy, like air.
Desert and Rainforest, I believe this could the right answer
The following officials would be forming a part of democracy: a cabinet member, a president (such as the president of Israel), and a member of a parliament.
An official that is not part of a democracy would be a king, such as the king of Jordan or the king of Saudi Arabia
