Sometimes the moon looks like a crescent. at other times, the moon looks like a half circle. what makes it possible for you to see the surface of the moon from earth?

The moon is one of the closest planets to earth. Sometimes you can even see the moon during the day. Our atmosphere is clear so it allows for us to see the planets in our solar system like the moon. The other planets, besides the sun, you would need a telescope to see from earth.

The answer is b. increased blood flow reduces nerve sensitivity