When a layer of cold air close to the ground is covered by a layer of warmer air, sound waves traveling upward may be bent, or refracted, by the difference in temperature and redirected toward the ground.
Answer:
2N
Explanation:
subtract rthe two forces to see which is greater
4-2=2
I would say option D, it depends on the size of the star
Answer:
Yes it would be different on Earth and the moon
Answer:
A(many people think that no energy or matter exists outside the universe)
Explanation:
