Europe currently enjoys a very high standard of living because?

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?

Which of the following terms describes the layers of air surrounding the earth ?

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