1.Deforestation in Brazil is contributing to global warming. When trees are cut, their stored carbon is released into the atmosphere. Brazil generally has the world's highest deforestation rate.
2.The effect of global warming in the amazon rain forest is the increse of drought and less rain fall.
3. The rainforest's amazon river is experienceing very small rain so it is almost faded away.
Wednesday, October 21, 2009
Thursday, October 15, 2009
How Is Global Warming Affecting The Arctic
1. Polar bears, whales, walrus and seals are changing their feeding and migration patterns, making it harder for them to survive and eat.
Tuesday, October 6, 2009
Friday, October 2, 2009
Global Warming in Antarctica
2.Global surface temperatures have risen chiefly because of a process called the greenhouse effect. In the greenhouse effect, certain gases in the atmosphere trap heat from the sun, acting much like the glass roof and walls of a greenhouse (see Greenhouse effect). The heat-trapping gases are called greenhouse gases. They include methane (CH4), nitrous oxide (N2O), ozone (O3), and a number of industrial gases. But the gas that has produced the most warming is carbon dioxide (CO2).
3.The average temperature of Earth's surface has increased by about 1.4 Fahrenheit degrees (0.76 Celsius degree) since the mid-1800's. Most of the temperature rise happened from the mid-1900's to the 2000's. Scientists have shown that it is probable that human-caused increases in greenhouse gas concentrations are responsible for most of the recent warming. CO2 ranks as the gas that has produced the most warming. Researchers have estimated that Earth's average surface temperature will rise another 2.0 to 11.5 Fahrenheit degrees (1.1 to 6.4 Celsius degrees) by 2100.
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