I N T R O D U C T I O N
It’s happening everyday and right now. It is becoming a worldwide problem. This is global warming. Global warming is a serious problem that affects our planet. Is it a natural cause or man-made? It may be natural. Many people point to the melting ice caps as proof that humans are the ones that are causing global warming, but what they may not know is that the polar ice caps on Mars are melting too. Humans may not be the main cause of global warming but they do affect it greatly causing it to accelerate. B A C K G R O U N D
Global warming was most likely sped up by human causes. One major human cause is pollution. People are creating more and more of it. One type of pollutant is greenhouse gases. These gases trap solar energy, increasing Earth’s temperature, rather than letting the heat back into space. Another cause is the burning of fossil fuels. Some fossil fuels are oil, gas, and coal. These produce carbon dioxide. We are producing too much of it into our atmosphere too quickly and plants can’t absorb all of that carbon dioxide. We even cause global warming to be sped up by being alive. We exhale carbon dioxide with every breath we take. If we want to reduce global warming, to a state we can deal with and not worry about it, we need to start by reducing all of the pollution we create. Global warming may be a natural cause but “humans can be a powerful influence on the climate as well.” It increases the evaporation of water into the atmosphere. Since water vapour itself is a greenhouse gas, this causes still more warming. The warming causes more water vapour to be evaporated. The C02 level is expected to rise in future due to ongoing burning of fossil fuels and landuse change. The rate of rise will depend largely on uncertain economic, sociological, technological and natural developments. Other gases such as methane, CFCs, nitrous oxide, tropospheric ozone are also responsible for global warming. Increases in all...
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