Selasa, 04 Oktober 2011

ozone layer depletion threat to human life

few weeks ago, the British Meteorological Agency reported that until the end of this century temperatures in Britain could reach 46 degrees Celsius. The same temperature experienced by the citizens of Kuwait in the Middle East. "Until the year 2100, heat waves will also occur in Britain each year, or several times a year," according to the British Meteorological Agency. The phenomenon of temperature rise has alarmed observers environment. The data show that the recent global temperature has risen between 2 to 5 degrees Celsius. These numbers seem small and insignificant. But really, there is great danger that threatens the Earth.
The researchers stated environmental concerns, although Earth's temperature rises only by 2 degrees Celsius, can cause the world's agricultural production declined to a quarter. It is conceivable, the hotter the temperature of the earth, will further diminish its food production. Under these conditions, only rich people could get food while poor people will starve. As a result of mass famine will hit the earth. One major cause of rising temperatures are thinning the ozone layer.

In 1985, environmental researchers found that the ozone layer has been perforated, and after doing some research, they concluded bhwa berlubangnya ozone layer is caused by too much gas CFC (chloro-fluoro-carbon) in the air. CFC gas is gathered in the upper atmosphere will interact with the reflection of sunlight that damage the ozone layer. In fact, the ozone layer is like a giant filter or shade, which protects plants, animals, including humans from ultraviolet radiation B (UV-B) emitted from the sun's harmful to the earth's surface.
Direct radiation ultraviolet radiation UV-B is a deadly and dangerous. The ozone layer filters out approximately 70-90 percent of the ultra-violet which is not too damaging. As a result of UV-B ultraviolet radiation the human immune response will decrease causing skin diseases, measles, chicken pox, herpes, malaria, leishamaniasis, tuberculosis, leprosy, and fungal infections such as candidiasis. In addition, UV-B radiation also caused damage to the environment, ranging from the breakup of the food chain in aquatic ecosystems in the sea until the declining productivity of crops, in addition to material damage to buildings and other objects of sunburn.

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