This chapter is designed to teach you: 1  The shifts in perspectives throughout American history. 2  Characteristics of various literary periods. 3  Famous authors and their works.  How to classify American literature within a movement.
Antarctica global warming has become a burning issue of the present time. Global warming in Antarctica will pose a serious threat to the rise in water level. Hence, Antarctica global warming has become a great concern for the scientists and researchers. As most of this continent is covered by ice, the impact of global warming is more acutely felt here. With the increase in the number of automobiles, air pollution has been on the increase in the last 20 years. This is one of the major causes of global warming.
Cold Most of Antarctica is a high, flat plateau of ice covered in snow throughout the year. The snow reflects the sun's solar radiation, and this combined with the altitude (an average of 14,000 feet above sea level) makes the interior of Antarctica the coldest place on Earth. The lowest recorded Antarctic temperature was taken at Vostok Station in July 1983: -89.2Â°C (-128.6Â°F). The lowest South Pole temperature is from June 23, 1982: -82.8Â°C (-117.0Â°F). The warmest temperature ever recorded at the South Pole, recorded at the height of the austral summer, December 25, 2011, was still well below freezing: -12.3Â°C (+9.9Â°F). An example of a sun pillar.