Should we recycle empty glass bottles, or should we bring back a refund system so that empty bottles can be reused many times before they are melted down to make new ones?
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Total Members Voted: 16
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Just read "Evolution Through the Looking Glass", I do not agree...
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10/06/2010 06:55:10 by Bored chemist |
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Is a sealed, water-filled can of water denser in water than a similar empty can?
Started by gti_fly_byeBoard General Science |
Replies: 4 Views: 6201 |
06/04/2013 21:13:36 by Bored chemist |