You can use map and notice one thinh. If you flipp over the edges of continents and put them together, you will get a big single continent that is called pangaea. Practically it's impossible but it could be imagined.
Net force
As it's negative the box will move left
a) Cumulus is 100% the correct answer
When you say full valence shell, are you talking about a valence electron shell?
I am learning about atoms and i know a little bit
they cannot be sterilized
