What happens when the fed aims to change interest rates? a. it announces a new discount interest rate. b. it asks congress to legislate new interest rates. c. it buys or sells dollars on the foreign exchange market to achieve the desired rate. d. it buys or sells government bonds on the open market to achieve the desired rate?

Which one of the following statements is true? ddt does not prevent disease from passing from agricultural animals to humans. cost was a major factor in the united states government's decision to ban ddt. many african governments concluded that the potential long-term health effects of ddt were not as serious as the immediate problem of insect control. ddt cannot accumulate in the fat of animals. the ddt ban in the united states has made it very difficult to control agricultural insect pests.