What are the advantages of wind power? Select all that apply.

1. always available

2. non-polluting energy source

3. free after equipment is built

4. useful in remote areas

5. can use anywhere

Which evidence is most likely used to indicate the beginning of solar system formation? a. materials combined to form a mass. b. materials were pulled together by gravity. c. water condensed and collected to form oceans. d. different species of microorganisms lived on earth.