Phases of the moon occur because (a) we can see only that part of the moon which reflects light towards us. (b) our distance from the moon keeps changing. (c) the shadow of the Earth covers only a part of the moon’s surface. (d) the thickness of the moon’s atmosphere is not constant.
Phases of the moon occur" because the shadow of the Earth covers only a part of the moon's surface. Moon is the only satellite of the earth which reflects the sun's rays to the earth and it has so many phases which is visible to the human in the earth
