It looks as if you need to learn how to conduct searches online.
My favorite way to search is to go to Google's advanced search page http://www.google.com/advanced_search?hl=en and put my search words or phrases into the first or second search box (either "all the words" or "exact phrase"). Another is to start out at http://scholar.google.com. However, there many other strategies for searching you can use, and the HOW TO SEARCH THE INTERNET section here will help you best: http://hanlib.sou.edu/searchtools/
Learning to use Google or other search engines can save you time and help you learn to find information efficiently. Here are some websites that can teach you how:
http://www.lib.berkeley.edu/TeachingLib/Guides/Internet/FindInfo.html
http://hanlib.sou.edu/searchtools/searchtips.html
http://www.pandia.com/goalgetter/index.html
http://websearch.about.com/mbody.htm?once=true&COB=home&PM=112_100_T
Compare the following objects in the our Solar System in terms of 1. Where they are located and 2. What they are composed of :
Sun
Terrestrial planets
Jovian planets
Asteroids
Comets
Meteroids
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