You are to find out what happened to the dinosaurs! There are many theories out there about why they disappeared. List all the ones you can find. Then pick two to talk about in detail. Make sure you tell us why the scientists think this theory is possible.
Extinction http://www.infowest.com/life/dinosaurs/extinct.htm
USGS http://pubs.usgs.gov/gip/dinosaurs/extinct.html
Scholastic http://content.scholastic.com/browse/article.jsp?id=4754
US Department of Energy http://www.sc.doe.gov/Accomplishments_Awards/Decades_Discovery/55.html
Enchanted Learning http://www.enchantedlearning.com/subjects/dinosaurs/questions/faq/Extinct.shtml
BBC http://news.bbc.co.uk/cbbcnews/hi/find_out/guides/animals/dinosaurs/newsid_1610000/1610461.stm
Don't forget to use your library as a resource. It's Proabably Good Dinosaurs Are Extinct by Raney The Dinosauria