Answer to Question 1
Demand-pull inflation starts with an increase in aggregate demand. This increase can arise by increases in the quantity of money, increases in government expenditure, or increases in net exports because any of these three shift increase aggregate demand and shift the AD curve rightward. The increase in aggregate demand leads to a higher price level and, temporarily, a higher level of real GDP. If the economy began at full employment, then temporarily the level of real GDP will be above potential. In the long run, however, the money wage rate rises to offset the increase in the price level, so aggregate supply decreases and the AS curve shifts leftward. The decrease in aggregate supply also raises the price level. So the only way the inflation can continue is if aggregate demand continues to increase.
Answer to Question 2
The statement is wrong on two counts. First, if the Fed makes an open market purchase of government securities, the quantity of money will increase rather than decrease. Second, the money multiplier points out that the change in the quantity of money will be greater than, not less than, the initial change in the monetary base.
Sources and Amounts of Oil Released into North American Marine Waters
Selected Vitamins: Food Sources, Functions, and Deficiency and Toxicity Symptoms (continued)
Marine oil pollution comes from many sources
Deforestation is one of the main sources of greenhouse gas emissions
Whole fruits and vegetables, whole grains, and legumes are the best food sources of fiber
Chart showing average yearly dose of radiation from natural and human-made sources