Sound wave is a pressure caused by the vibration of something in a medium that transfers anergy, like air.
Answer:
The imaginary vertical lines that run from the North pole to the South pole on a map are called longitudinal lines. The equator is equidistant from the North and South poles. Then, the equator separates the northern and southern hemispheres.
Explanation:
Answer:
made from minerals
That is because of the definition i was given
