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.
Climate. Antarctica can be called a desert because of the low levels of precipitation [precipitation: Moisture that falls from the air to the ground. Includes rain, snow, hail, sleet, drizzle, fog, and mist.] . Antarctica has the coldest land temperature recorded on the earth of -89.2Â°C.he high altitude [high altitude: A measure of an area's height above sea level.] of the land. Temperatures decrease approximately 1Â°C for every 100 m increase in height. Cold air cannot hold as much water vapour as warm air, so precipitation is less likely.