Which example was a positive effect on society as a direct result of the use of oil for energy?
a) exxon valdez oil spill destroyed the habitats and lives of many animals.
b) the need for oil as led to the united states' dependence on other countries for oil.
c) the emissions of the internal combustion engine which runs on oil/gas has added to air pollution such as smog.
d) the discovery of oil ended society's dependence on whale oil for fuel, ending the majority of the whaling in the world.