The demand for seats in 10 a. m. classes at the university is higher than the demand for seats in 8 a. m. classes. The supply of seats is fixed. If the university prices classes at the price required to achieve equilibrium at 10 a. m., there will be:

A. a shortage at 8:00 AM
B. a surplus at 8:00 AM
C. equilibrium at 8:00 AM
D. disequilibrium at 8:00 AM, but we cannot determine which type

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.