Pollution Essay Example | Topics and Well Written Essays - 1000 words - 1

Pollution - Essay Example This condition of remaining free of ice is highly dependent on the water currents and states of the weather. The Polar Bears usually favor such areas which enable them to hunt for seals in these spots of leads and makes use of the sea ice to be their podium (Sea World, â€Å"Distribution and Habitat†). In the similarly context, polynyas are water areas which are bounded by ice all around the year because of tidal currents, winds and upwelling. These areas are considered to be significant as they serve as major food supplying and breeding regions for wintering marine mammals such as the Polar Bears. Few of the Polar Bears were learnt to chase the lower border of the floating sea ice throughout the year and makes widespread relocations according to the retreats and proceeds made by the ice (Sea World, â€Å"Distribution and Habitat†). The population of the Polar Bears has been found to be declining at an alarming pace because of their disappearing habitat owing to global warming. The various reasons accounting for the alterations in the climate has resulted in speedy loss of ice in the Arctic sea. The ice in the Arctic sea was found to turn down by 7.7 percent every decade along with a turn down in the sea ice in the perennial sea region by 9.8 percent every decade. To add more to this problem, in few of the areas, a contraction of the ice in the Arctic sea was found to be 32 percent from the periods of 1960 and 1970 to 1990. This huge decline in the ice areas have resulted in jeopardizing their habitat of the Polar Bears which is posing to be a severe threat to their population (World Wildlife Fund, â€Å"Polar Bear: This icon of the North Is Losing Ground As Global Warming Melts its Sea Ice Habitat†). Moreover, the ice is examined to melt quite before time in a year and is taking more time to develop owing to the alterations in the climate. This