The frequency of a wave is the number of waves that passes through a point in a certain time. The less waves that pass in a period of time the lower the frequency of the wave. The more waves that pass in a period of time the higher the frequency of the wave. When measuring wave length the time period used is usually one second.
Answer:Probably water ballons,Paint,Etc
Explanation:
the answer is A.
because it says THE AIR which means there is air in the balloon
It is a conduction pathway for tactile and engine nerve motivation. It also helps with our brain stem.