A.
Destructive interference is when two waves cancel each other out or when the crest of one wave passes through the trough of another wave.
<span>` You can consider T to be in units of seconds/step. Frequency is the inverse of period, so
1/T = frequency and has units of steps per second. There will be 60 times as many steps in a minute.</span>
Water was confirmed to be on the sunlit surface of the Moon
skin cancer and it cause to lost transportating process
