Answer:
A - Enamel covers this surface
C - This is the pulp of the tooth
AB - Made of a similar material to bone
D - The crown of the tooth
E - This is considered the root of the tooth
5) cementum
This connective tissue forms along a tooth's root and helps solidify it by connecting to fibers that support the tooth's place in the jawbone.
The lipid bilayer of biological membranes<span>, is intrinsically impermeable to </span>ions<span> and polar molecules. Permeability is conferred by two classes of membrane </span>proteins<span>, pumps and channels.</span>
The three primary ways are
Commensalism
Parasitism
Mutualism
The truth is nobody knows not even the scientist. They think its made out of both but as for now Nobody knows if Deimos is made out of dirt or gravel