Answer:
it is a wave it is longtidnal wave it only moved in a medium it is not able to move in vacuum i.e if you are in space and talk your voice can't be heard bcz sound doesn't travel in vacuum
if sound doesn't move from one place to another you can't hear it
Answer:
At the gym work out gaining weight needs to adjust balanced.
Answer:
d.) all of the above
changing and separating the location of continents
Answer:
they are ions of their atom.
<em>[character limit thing]</em>
