When sound is created, it travels to the ear through a A. compression.
B. medium.
C. rarefaction.
D. surface.

How did the europeans design the national borders of africa? why?

Which volcanic eruption caused the most deaths

Which of the following is an example of an outdated theory based on the consensus of the scientific community ? a. big bangb. geocentric solar systemc. heliocentric theoryd. plate tectonics answer : geocentric solar system