You're doing a report on the moon, and stumbled across some pictures of what look like jagged, rocky areas with really high elevation. from what area on the moon might these pictures have come from?

The parts of the moon that are elevated and made up of jagged rocks are called the Lunar Highlands. These are actually the light-colored parts of the moon that we can see from Earth. These parts are made up of mountains. The darker parts that we see from Earth are the craters. The Highlands make up most of the near side of the moon (the part we can see). On the other side of the moon, called the far side, it is made up mostly of Islands, parts of the moon that are wide and said to be once covered in water.

Number one is sinkholes may form from water erosion

From a high concentration to a low concentration.