contaminants have gotten into people's drinking water. In addition, pesticides and fertilizers, used for farming, can seep through the ground and contaminate not only the soil, but also underground streams and other sources of water. Acid rain is another global concern. Acid rain is air pollutants that travel in precipitaion;
             the burning of sulphuric coal is the primary cause of this. Acid rain can corrode bronze and marble, so not only is acid rain a danger to life, but it can also destroy works of art as well. The oceans, as well, are affected as a result of extreme pollution. Not only are toxic wastes killing many fish, but over-expenditure of fishing areas have dramatically decreased the fish population in many areas. In addition to toxic pollutants and over exploiting of fishing, a new problem has arisen; anoxia. Anoxia is water with oxygen
             depletion, and this has led to the deaths of many types of aquatic life. Deforestation is yet another problem, and forests around the world are being recklessly cut down. Brazil in particular has over-forested its rain forests, and the ecological balance has become strained, making some areas unsuitable for human life. The deforestation has also dramatically increased soil erosion, and this has led to disastrous mudslides, destroying towns and killing both humans and animals alike. In total, the greenhouse effect is
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