Answer is: glycerol because it is more viscous and has a larger molar mass.
Viscosity depends on intermolecular interactions.
The predominant intermolecular force in water and glycerol is hydrogen bonding.
Hydrogen bond is an electrostatic attraction between two polar groups in which one group has hydrogen atom (H) and another group has highly electronegative atom such as nitrogen (like in this molecule), oxygen (O) or fluorine (F).
I'm assuming u mean "moon" and because it rotates around the rotating earth, and the side of the moon we cant see from this angle is dark, which is y we see pieces of the moon in a cycle. Its constantly turning
