this is a type of greenhouse effect. (NDRC, 2011) Global warming is one of the biggest issues the world is facing now. However, even though solutions are being made to fix the issue on global warming, there are still some individuals who do not do their part in helping take care of the Earth. Although some individuals may not agree to this because they only think about the natural causes of global warming, I believe that human activity contributes greatly to the growing problem of global warming.