The moon revolving around the Earth causes the phases of the moon, and phases of the Moon are caused by differing amounts of light reflected from the Earth. Given these facts, what causes differing light to reflect off of the moon among the following options:
- depress neuronal excitability
 - energy of moving objects
 - The revolution around earth
 - our nearest star
 - a hemisphere is tilted away from the sun
 - focusing a lens
 - flow of electrons
 - that material's properties


 

   The revolution around earth      