Help me question (a) and (b)​

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?

What is i fracture in the crust called when land move up, down or sideways

Amethod of separation that employs a system with two phases of matter, a mobile phase and a stationary phase, is called