Why does a demand curve slope downward from left to right? a. because price increases as demand increases b. because revenues decrease as price increases c. because revenues increase as price decreases d. because demand decreases as price increases

Marine exptoration of oil uses seismic waves to locate oil in the seabed. what is a negative impact from seismic waves on the aquatic ecosystem of the ocean? a. seismic waves kill microoganisms b. seismic waves disrupts the sand and causes seafloor erosion c. seismic waves have virtually no adverse affects on marine life d. seismic waves damage the sonar that dolphins and whales use to orient themselves underwater