Explain why astronomers divide the sun into different layers.

Gather reliable information to brent make his decision. to gather this information, use newspapers, call insurance companies or look at their web sites, and review consumer magazines and web sites. also, look at the manufacturer web site or for information about gas mileage. list the sources you use and take notes.

If element x has 99 protons how many electrons does it have

What sort of waves exhibit the doppler effect?