This polar stereographic projection over North America and adjacent oceans shows the 500-mb analysis for 12Z on January 26, 2002. The channel of air marking the fastest flow at 500 mb is primarily over the Pacific and generally over the Atlantic east of the Carolinas and Florida.

Which of the statements best describes why the aggregate demand curve is downward sloping? an increase in the aggregate price level causes consumer and investment spending to fall, because consumer purchasing power decreases and money demand increases. as the aggregate price level increases, consumer expectations about the future change. as the aggregate price level decreases, the stock of existing physical capital increases. as a good's price increases, holding all else constant, the good's quantity demanded decreases.