What are clouds of dust and gas from which a star first forms. they are pulled together by gravity into a spinning disc. the center of the disc becomes a star while the rest can be come a system of planets

Is snow a type of precipitation? explain why or why not.

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere