The rate of motion of the earth at its equator is about 1,038 mi/h because of its rotation. from this information, estimate the earth's circumference using an order-of-magnitude estimate. 2,000 mi 20,000 mi 200,000 mi 2,000,000 mi i just took the test and the answer is 20,000***

As seen in a us weather map, the h (or high) and l (or low) symbols indicate regions where surface air pressures are high or low, respectively, compared to surrounding areas. an h is plotted where the air pressure is highest and an l is plotted where the air pressure is lowest. proceeding outward and away from the center of a high pressure system, the air pressure "