science
posted by Ricahard .
How do the physical properties of the parts of a pencil affect howthe pencil is used?

science 
SraJMcGin
Try some of the following links for information:
http://www.google.com/search?q=how+the+physical+properties+of+the+parts+of+a+pencil+affect+how+it+is+used&ie=utf8&oe=utf8&aq=t&rls=org.mozilla:enUS:official&client=firefoxa
Sra 
science 
Melanie
The physical properties of carbon vary widely with the allotropic form.
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