Electromagnetic waves can travel
A. without frequency

B. through any substance

C. on a curved path

D. in a vacuum

Your answer would be D.

In a vacuum

Explanation:

As they can also travel in vacuum like Space.

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

the five characteristics of adolescence are biological growth and development, and undefined status, increased decision making, increased pressure and the search of self.