Answer:
18- H
19- D
20-G
21-A
(i think these are the answers)
Explanation:
I think it is True because when the plates collide then a volcano forms. (Subduction Zone)
Answer:
the answer is the second option
Answer:
Shorter
Explanation:
As a wavelength increases in size, its frequency, and energy (E) decrease. From these equations, you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer. There are two basic types of waves: mechanical and electromagnetic.
