Answer:

1. Matter is made of molecules.

2. Gravity is so weird because.

3.

Verified answer

1. All matter is made up of atoms,which are in turn made up of protons, neutrons and electrons.
2. No force is more familiar than gravity — it's what keeps our feet on the ground, after all. ... If these extra dimensions exist — and if gravity is able to “leak” into them — it could explain why gravity seems so weak to us.
3. Travel faster than the speed of light. ... At the velocity of light, if you were somehow to reach it, your mass will be infinite and it will so require infinite force to push you, so no going beyond that speed. This is the reason time flows in a single direction.
4. All the matter and antimatter particles should have annihilated with each other since then, leaving only photons, but somehow one matter particle in a billion or so has survived to create the universe as we know it.
5. From liquid to solid or solid to liquid the transition has to cross the grey zone.