Lava and other materials that are launched from a volcano into the air are referred to as
a. basalts.
b. tephra.
c. flows.
d. magma.

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?

What body of water is the second cataract of the nile river submerged under

Where the main factor that enabled the growth of cities and civilizations was the existence of