Answer :
The<u> fat </u>of the myelin sheath insulates neurons so messages are conducted more efficiently.
In all reality any and all resources could help
Population ...................
Molecular Biology-
Comparative Anatomy- 5
Phylogeny- 2
Homologous Structures- 1
Vestigial Structures- 3
Analogous Structures- 4
C, it's not D and you should never eat something if you don't know what's in it; meaning it's not b, you are talking about macromolecules so you should examine its individual cell structure.