“In the last twenty years, the average temperature has drifted
upwards by about one degree” (Chang Noi 2). The changes we expect are
fairly clear, though the timing is unsure because prediction is very
complex, and because much depends on what happens elsewhere in the
world. Global warming is caused by emission of greenhouse gases like
carbon dioxide, methane and burning of gasoline in the engines of
vehicles. The causes of global warming have resulted in many negative
effects on Thailand, such as, the rise in sea level and unexpected
weather conditions, and the impact on farmers.