Environmental Fact 3

There were 7 ice ages

http://www.21stcenturysciencetech.com/articles/Ice_Age.html
1.Laurence Hecht
2. She is educated about ice ages.
3. It is kind of credible.
4. It gives information about the last ice age.
5. Yes
6. It gives a lot of facts about the ice age.

http://www.amnh.org/science/biodiversity/extinction/Intro/Iceage.html
1. The American Museum of Natural History
2. It is a real museum of natural history.
3. It is very credible.
4. It says that there were 8 ice ages.
5. Yes
6. It if from the American Museum of Natural History.

http://everything2.com/index.pl?node=ice%20age
1.Everything2.com
2.It gives links to other websites about the information.
3.It is kind of credible.
4.It says that there were 4 ice ages.
5.Yes
6.It gives links to other websites that give good information.

I think that there were 8 ice ages. One of the sources that i just posted identified 8 ice ages.