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.

Chinese privet is a plant that is native to china. over 150 years ago, chinese privet was introduced to the united states as a fast-growing shrub that serves as an excellent privacy hedge. with no natural herbivore, chinese privet quickly established itself and spread in natural areas throughout the southeast and eastern seaboard of the united states. its dominance in these areas has jeopardized the survival of native plant species. chinese privet provides evidence that introducing non-native organisms can cause environmental damage integrated pest management strategies will not decrease chinese privet populations american gardeners can easily control the spread of chinese privet non-native plant species have type i survivorship curves

Cells are adapted to preform specific functions. which of the following terms refers to this capability?

Common symptoms of an iron-defiency anemia include muscle weakness shortness of breath and lightheadedness why does iron deficiency causes these symptoms