The periodic table lists all the elements according to the number of they have! You can’t change without changing the element? If You Help I'll Give You Points

“when two plates carrying continents collide, the continental crust buckles and rocks pile up, creating towering mountain ranges. when an ocean plate collides with another ocean plate or with a plate carrying continents, one plate will bend and slide under the other. this process is called subduction. “ i found this on google i hope it

If there was no gravity then their would be no downword force on the football to have it return the the grownd, and if there was no friction (mainly air friction) then there would be no opposing force the stop the ball from moving through the air allowing the ball to travle ∞.

Independent variable is something that is changed in a experiment. 

You yeah with the side of the yeah with a little bit of yeah.