Ultraviolet, visible, infrared, and radio waves are passing the atmosphere. O<span>ur atmosphere blocks most ultraviolet light (UV) and all X-rays and gamma-rays from reaching the surface of Earth. With this in mind B: is your only answer.</span>
Answer:
Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission. Electromagnetic waves travel in a vacuum whereas mechanical waves do not. The mechanical waves need a medium like water, air, or anything for it to travel.
Explanation:
Spending any length of time in microgravity can weaken bones and shrink muscles. But there are more subtle ways<span> that </span>space travel<span> wreaks havoc on the </span><span>human body</span>
. Both can be represented by balanced equations. Both involve changes to electron arrangements in atoms. Both involve a change in energy. Both result in a change in the identities of elements.