Question

1. what causes the appearance of the moon from earth to change throughout the month? the amount of sunlight the moon reflects. the side of the moon that is facing earth. the amount of sunlight and cloud cover on a certain day. the position of the moon in comparison to mars.

Explanation:

The moon's appearance from Earth changes due to the amount of sunlight it reflects as it orbits Earth. The relative positions of the Earth, moon, and sun determine how much of the moon's sun - lit side is visible from Earth. Cloud cover on Earth affects views of the moon but not its appearance changes over a month. The moon - Mars comparison is irrelevant. The side of the moon facing Earth doesn't fully explain the changing appearance; it's about the sunlight reflection.

Answer:

The amount of sunlight the moon reflects.