Once this initial energy is added, the wave travels through the medium until all its energy is transferred. In contrast, electromagnetic waves require no medium, but can still travel through one.
Answer:
it is called a ledgar
Explanation:
Dont really know how to explain but hopefully it's right
Answer:
galaxy
Explanation:
there are many univereses
Answer:
A: low survival rates, abnormal development,and susceptibility to disease.
Explanation:
Hopefully this helps!