Sunday, March 7, 2010

Global Warming Impact

Greenhouse Gas (Grk), which was due to the atmosphere resulting from human activities primarily related to the burning of fossil fuels (oil, gas, coal and stone) for purposes such as power generation, motor vehicles, pabrik2, cooking. In addition Grk is also produced from the burning of forest and agricultural activities. These activities generate carbon dioxide, methane, and nitroksida, which led to increased concentration in the atmosphere Grk.

Grk in the changing composition of the atmosphere, the increasing concentration of global Grk result of human activity causing the hot sun reflected back by the earth's surface into space, most trapped inside the earth due to hampered by earlier Grk. Increasing the amount of emissions (exhaust) Greenhouse gases in the atmosphere at the end of the increase in average temperature of the earth's surface, which was later known as Global Warming.

Global warming is increasing the average temperature of the atmosphere, ocean and land Earth caused by human activities, especially activities of burning fossil fuels (coal, petroleum, and natural gas), which releases carbon dioxide (CO2) and other gases known as greenhouse gases into the atmosphere. Increasingly filled with atmospheric gases and the greenhouse he grew into insulator that holds more heat reflected from Earth's sun. Gelobal warming will affect:

1) Weather

Scientists predict that during global warming, the northern part of the Northern hemisphere (Northern Hemisphere) will heat up more than other regions on Earth. As a result, icebergs will melt and the land will shrink. Will be less ice will float on northern oceans. Areas that previously experienced light snow, may not be there again. In the mountains in subtropical areas, snow-covered parts will be less and will melt faster. Growing seasons will be longer in some areas. Temperatures in the winter and at night would tend to increase.

2) Sea levels

As the atmosphere warms, the ocean surface layer will be warmer, so the volume will grow and raise the sea level. Warming will also melt much glacier ice, especially around Greenland, further swelling the sea. Sea levels worldwide rose 10 - 25 cm (4 - 10 inches) during the 20th century, and IPCC scientists predict a further rise of 9 to 88 cm (4 to 35 inches) in the 21st century.

Sea-level changes will complicate life in the coastal region. Increase of 100 cm (40 inches) will submerge 6 percent of The Netherlands, 17.5 percent of Bangladesh, and many islands. Erosion of cliffs, beaches, and dunes will increase. When the high seas to reach the mouth of the river, flooding caused by high water will rise on the mainland. Rich countries will spend huge amounts of money to protect the shorelines, while poor countries may simply evacuate from coastal areas.

3) Agriculture

One might assume that a warmer Earth would produce more food than ever before, but this is not the same in several places. Southern Canada, for example, may benefit from more rainfall and longer growing season. On the other hand, semi-tropical agricultural land dry in some parts of Africa may not be able to grow. Desert agricultural areas that use irrigation water from the mountains far may suffer if the snowpack (snow collection) winter, which serves as a natural reservoir, melts before the peak months of planting. Crops and forests may experience insect and disease attacks more powerful.

4) Animals and plants

Animals and plants are living creatures that are difficult to avoid the effects of warming because most of the land has been controlled by humans. In global warming, animals tend to migrate toward the poles or to the mountains. Plants will change the direction of growth, seeking new areas as old habitats grow too warm. However, human development will prevent this movement. The species that migrate to the north or south is blocked by the cities or agricultural lands may be dead. Some types of species that are not capable of quickly moving toward the poles may disappear.

5) Human health

In the world of warm, scientists predict that more people are affected by disease or die from heat stress. Outbreaks of disease usually found in tropical areas, such as diseases caused by mosquitoes and other disease carrying animals, the more widespread because they can move into areas previously too cold for them. Currently, 45 percent of the world population live in areas where they might get bitten by mosquitoes carrying the malaria parasite; percentage will increase to 60 percent if temperatures rise. Disease-Other tropical diseases may spread like malaria, dengue fever (dengue fever), yellow fever, and encephalitis. Scientists also predict rising incidence of allergies and respiratory diseases due to warmer air will increase the pollutants, mold spores and pollen.

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