Selling grain is the answer.
Sand sheets and dunes cover approximately 25 percent of the Sahara's surface.
Answer:
on Hudson Bay and extending for 8 million square km (3 million square miles) over eastern, central, and northwestern Canada from the Great Lakes to the Canadian Arctic and into Greenland, with small extensions into northern Minnesota, Wisconsin, Michigan, and New York, U.S.
Answer:
GPS Is The Answer!!!!!!!!!