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.
The extent of annual sea-ice has been changing in both the Arctic and Antarctic, in both cases it is explicable in terms of global warming. Temperature change in Antarctic per decade from 1957-2008 - NASA, 2009. Temperature change in Antarctic per decade, this map was published in 2004, four years before the first one.