Selasa, 15 Mei 2012
hortatory exposition about global warming
Global warming is one of the most serious challenges facing
us today. Global warming is basically
the increase in the temperatures of the Earth's atmosphere, land masses and
oceans. The Earth's surface temperature is at an average of 59F and over the
last hundred years, this figure has risen to about 1F. By the year 2100, the
average change in the temperature of the Earth could range from 2.5F to about
10F, enough to melt glaciers and polar ice caps.
The cause of global warming Global warming has and will always
occur naturally.it has become such a
concern in our lifetime is due to the fact that human activities and practices
have contributed significantly to its occurrence and severity. Tropical deforestation is the largest
source of emissions for many developing countries, but slowing deforestation
can't solve the climate problem by itself.Other
human practices that contribute to global warming is the agricultural revolution has also
contributed to global warming. As more and more communities need lands converted
from forests to residential and commercial areas, biomass is reduced,
contributing to the increase in the presence of carbon dioxide in those
regions. Since carbon dioxide is processed by plants and trees, their absence
contributes to its increase.
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