Name:
Anonymous
2007-07-03 2:16
ID:pUlgJn5g
are carbohydrates, proteins, lipids & nucleic acids substances?
Name:
CSharp
!FFI4Mmahuk
2007-07-03 2:23
ID:SqCeteyx
Yes. Anything that has a definite composition is a substance. Things that don't, e.g., saltwater, so are mixtures.
Name:
Anonymous
2009-03-18 3:18
I wants lots and lots of some delectable pot!
Marijuana MUST be legalized.