It is now a known fact that the Earth's surface temperature has risen by 1degree Fahrenheit in the past 100 years, with an expedite warming over the past 20 years. There is genuine evidence that most of this warming over that past 50 years is due to human activities. Human activities have changed the chemical composition of the atmosphere through the increase in the atmosphere of greenhouse gases such as carbon dioxide, methane, and nitrous oxide. <…showed first 75 words of 391 total…

…showed last 75 words of 391 total…as water expands when heated, the sea level naturally rises. Experts say that if the sea level goes up by 1 meter, Bangladesh will lose 17.5% of its land. There is an expected rise of half a meter in sea levels over the next century. It also been reported that due to global warming, two South Pacific islands, Tebua Tarawa and Abanuea, have disappeared, as sea levels in that region have risen. <Tab/>