Global Warming And Its Effects On The Environment Essay

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good swimmers, so 40 percent of Alaska and Canada polar bears estimated by the National Geographic drowned or starved as their hunting area shrunk dramatically. I am not sure whether polar bears attain a mutation making them become “Olympic athletics” and successfully transfer this gene to next generations before they have the same fate with 50 percent of all the living species on earth which are on the edge of extinction. Coral reefs are also “victims” of global warming. Recent research indicates the rise of both ocean acidification caused by carbon dioxide and water temperature are threatening 75 percent of the world’s coral reefs since the changes of water’s features make they unable to absorb calcium carbonate which makes up their shells.
Moreover, climate change not only challenges scientists and climatologists, but also puts a big pressure on economists, sociologists and politics. The changes in climate can shift crop patterns. Additionally, extreme and fluctuated weathers such as droughts, floods, and heavy downpours induce stresses on agricultural regions. Higher temperatures also increase diseases and insect pests since warm weathers are favorable for many viruses, bacteria, and insects to grow vigorously and reproduce quickly. Consequently, 795 million of people all over the world (particularly in Africa and agricultural nations) are experiencing hunger. Furthermore, the hydro-electricity industry is facing the possibility of losing over 3,000 megawatts of

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