The nebular theory

Clearly explain the nebular theory in the formation of our Solar System.
What is the most likely explanation for the formation of the asteroid belt? The Kuiper Belt? The Oort Cloud?
What is the most likely scenario for how the Earth got its moon? Are there or were there any competing explanations for our moon? If so, name a viable
competing explanation.
What happened to the solar system when the Sun began to fuse hydrogen into helium?
Is the arrangement of planets we have (rocky near the sun, gaseous further out) typical of a planetary system? You may have to do a little research for this
question. Hint: Look at the Kepler Satellite data.