Evs 1 Short Answers Study Guide Graded A+

Explain why groundwater pollution is difficult to clean. {Ans: Groundwater pollution is difficult to clean because groundwater recharges very slowly. The process for some aquifers to recycle water and purge contaminants can take hundreds or thousands of years. Groundwater is also difficult to decontaminate because the water is dispersed throughout large ares of rock and sand. Pollution can cling to the materials that make up an aquifer, so even if all of the water in an aquifer were pumped out and replaced with clean water, the groundwater could still be polluted.}Briefly explain the nature and effects of the El Niño-Southern Oscillation (ENSO). {Ans: El nino is a short term periodic change in the location of warm and cold water masses in the pacific ocean. During El Nino winds in the west are weak and creates large amount of precipitation in the southern united states.}Why is it that prevailing winds do not blow directly northward or southward? {Ans: Because the earth rotates and the latitude and longitude get different amounts of heat, Corillias effect}Where does the majority of the air pollution in the United States come from? {Ans: Most of the air pollution is caused by human