Which feature forms when magma cools beneath Earth's surface? geysers O calderas O batholiths O vents​

The map above shows where people live in the united states. areas that are darker blue are areas where people live close together. areas that are lighter colors are places where people live farther apart. as a geographer, if you were to study where people live and why they choose to live in these places, which of the six essential elements of geography would you be using?

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

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4