Are non carbon based life forms possible? Why or why not?

No, it is not possible. The planet Earth's population is made up of mostly carbon and water, without it we wouldn't be alive. Carbon is also what makes our backbone. Whatever creature is non-carbon based must be very wierd looking and not have the long of a life span.

U.S Switch To Metric System?

Yes, I Believe The U.s Should Switch To The Metric System. It Would Be Less Confusing And An Inncident Like The N.A.S.A Crashing Could Have Been Avoided If Both Space Crafts Were Using The Same System. The Metric System Is Very Simple And Is Already Well Known By Many Here In The U.S.

http://www.metric4us.com/whynot.html

This School Year

This School Year For Biology Class I'd Like To Learn As Much As The Subject Has To Offer. I Want To Expierence Different Things And Learn New Things. I Hope To Accomplish A Lot And Stay Focused On My Work. Well Yeah, Thats About Does It.