ANT 160 Lecture Notes - Lecture 32: Majuro, Yellow Fever, Dengue Fever
9 Dec 2017
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Document Summary
Greenhouse effect: a natural phenomenon whereby certain trace atmospheric gases absorb a portion of the heat radiating from the planet"s surface, trapping and reflecting it back to the earth"s surface. Scientists have expressed concern that human induced changes in the atmospheric greenhouse gas concentrations are significantly enhancing the naturally occurring greenhouse effect. This enhancement is predicted to cause warming of the earth"s atmosphere and significant disruptions in global climatic systems. The most important greenhouse gases produced by economic activity are: carbon dioxide, methane, nitrous oxide, and chlorofluorocarbons. Fossil fuels: buried deposits of decayed plants and animals that have been converted to crude oil, coal, natural gas or heavy oils by exposure to heat and pressure in the earth"s crust over hundreds of millions of years. Carbon dioxide: one of the greenhouse gases, which is released to the atmosphere by. Methane: a colorless, non-poisonous, flammable gas created by anaerobic both natural and human activities decomposition of organic compounds.
