Answer:
okay I will do that since you asked do nicely :)
<em>The Jan. 21</em> total lunar eclipse will be the last one until May 2021, and the last one visible from the United States until 2022; the most recent total lunar eclipse previous to this one appeared in July 2018.
It looks correct to me. Good job
Answer:
B.
Explanation:
Because a Longitudinal wave is a wave vibrating in the direction of propagation.