Hope my answer helped you
Answer:
I think its the first one The penny absorbs the light as it enters the cup.
Explanation:
I hope this helps u! :D
In the interphase, they are really thin, just one strand which is only a few atoms wide (very challenging for an optical microscope and not too easy for the electronic one)
Answer:
I'm pretty sure it's B, pressure.
Explanation:
I hope this helped :)