Michael A. Harris
1 Voyages Though The Universe, Fraknoi, Andrew, David Morrison, and Sidney Wolff, Saunders College Publishing, N.Y., New York, pp. 416
2 Ibid, p. 416
3 National Geographic: Earth Science, Ralph M. Feather Jr., PhD, Susan Leach Snyder, and Dinah Zike, Mc Graw Hill, N.Y., New York, pp. 737
4 Ibid, p. 737
5 Voyages Though The Universe, Fraknoi, Andrew, David Morrison, and Sidney Wolff, Saunders College Publishing, N.Y., New York., pp. 422
6 Ibid, p. 424
7 Ibid, p. 438
8 Ibid, p. 440
9 Ibid, p. 448
10 Ibid, p. 460
11 Ibid, p. 463
12 Ibid, p. 464
13 Ibid, p. 440
14 Ibid, p. 440
15 Website http://www.earth.uni.edu/~morgan/astro/course/Notes/section2/new8.html
16 Website http://www.earth.uni.edu/~morgan/astro/course/Notes/section2/new8.html
17 Website http://www.astronomynotes.com/evolutn/s3.htm#A1.2.1
18 Website http://archive.ncsa.uiuc.edu/Cyberia/Bima/GMC.html
19
Voyages Though The Universe, Fraknoi, Andrew, David Morrison, and Sidney Wolff, Saunders College Publishing, N.Y., New York., pp. 370
20 http://news.nationalgeographic.com/news/2003/04/0421_030421_deathofplanet_2.html
21 Website http://calspace.ucsd.edu/virtualmuseum/climatechange1/02_1.shtml
22 Voyages Though The Universe, Fraknoi, Andrew, David Morrison, and Sidney Wolff, Saunders College Publishing, N.Y., New York., pp. 460
23 Ibid, p 460
24 Ibid, p 460
25 Ibid, p 460
