Everything in the Universe originated from a single point. How was it possible for everything in the Universe to have occupied a single point?
OA. Only protons and electrons existed in the Universe, and they were pulled together by gravity.
OB. Only single atoms existed in the Universe, and they were squeezed together by magnetic fields.
OC.
All mass in the Universe was in the form of gases, and gases take up minimal space.
OD
All mass in the Universe was once energy, and energy does not take up space.

Explain what will happen if decomposers were apsent from a forest ecoysystem.

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?

Explain the difference in reactivity of the elements based on their electron configurations.