What is an electric circut with two or more current paths?

Nuclear fusion is the source of energy for stars. besides hydrogen, which other element is most likely also common in stars?

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?

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?