Global warming begins with the greenhouse effect, the phenomenon has caused the interaction between Earth's atmosphere and radiation from the Sun.Solar radiation passing through the atmosphere and is absorbed in part on the ground. However, a portion of the radiation is reflected back out to space.Gases in the Earth's atmosphere absorb radiation part; Thus, the atmosphere heats up.This warming of the atmosphere is called the "greenhouse effect" because it is similar to the process of keeping warm in a greenhouse in winter: solar radiation were the glass of a greenhouse, greenhouse warming and keeping warm for plants in greenhouses during the winter.The gases present in the atmosphere is the main cause of the greenhouse effect are called "greenhouse gases", and include water vapor, carbon dioxide (CO2), methane and nitrous oxide. Not greenhouse gas would also be the same: for example, methane is likely getting heat folded about 21 times that of carbon dioxide, according to the EPA.However, CO2 is often cited as the main cause of global warming due to human activities – mainly due to the burning of fossil fuels such as coal and oil-frees the unprecedented CO2 into the atmosphere since the industrial revolution in the late 18th century.
đang được dịch, vui lòng đợi..
![](//viimg.ilovetranslation.com/pic/loading_3.gif?v=b9814dd30c1d7c59_8619)