Answer:
erosion
Explanation:
it carries things from one place to another
The answer is A. an object that allows some light to pass through
Answer: A
Causing air molecules to vibrate
Explanation:
Sound is made by vibrations. And it is an energy. When any object vibrates, it causes movement in the air particles. These particles bump into the particles close to them, which makes them vibrate too causing them to bump into more air particles. This movement, called sound waves, keeps going until they run out of energy.
Answer: 12.5 km/s
I don't really know how to explain this, but here is your answer.
