Which of the following is not a type of air pollution?

a.) acid rain

b.) mercury

c.) ozone

d.) oxygen

How forest companies conflict with aboriginal

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?

Describe the four major spheres of the earth system; identify the parts of the earth they each represent. explain what is meant by the "earth system."