reasons:

empty spaces on a square box makes it easier to pick up a slice

you can also put chili flakes, and oregano etc in the empty spaces

square pizza boxes are easier and cheaper to make

round boxes are more difficult to transport on-site

Click on the edit button on top, and choose restore sprite

you can see a molecule, but you need trillions to see them

tf you mean "what"? do you know what a molecule is?

why is this in the scratch steam?