Homework Help: Biology

Posted by John on Thursday, June 4, 2009 at 11:31pm.

1. Mutations to DNA cause changes in organisms. Explain why this might be important to the survival of a spcies?

2. Why is it important to be protected with a lead shield when you are getting dental X rays?

3. Why can suntanning be dangerous for a skin cell?

Biology - John, Thursday, June 4, 2009 at 11:32pm
help is greatly appreciated!~!
Biology - MathMate, Friday, June 5, 2009 at 9:30am
1.
http://en.wikipedia.org/wiki/Mutation
2.
http://en.wikipedia.org/wiki/Lead_shielding
3.
http://en.wikipedia.org/wiki/Skin_cancer
http://www.hawaiiantan.com/qvc.htm

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