What are factors for sparsely populated areas

The layers of earth are based on what two sets of characteristics?

After considering options, a student using the problem-solving process should next

Afathom is a unit of length, usually reserved for measuring the depth of water. a fathom is approximately 6 ft in length. take the distance from earth to the moon to be 230,000 miles, and use the given approximation to find the distance in fathoms.