Causal Argument Essay Example | Topics and Well Written Essays - 1250 words

Causal Argument - Essay Example Causes of Pollution As noted by the US Environmental Protection Agency, EPA, pollution could be caused by either human or natural processes. In environmental pollution, air pollution has been commonly reported in industrial towns. Raven, Berg and Hassenzahl (12) categorize air pollutants into gaseous and particulate pollutants. These gaseous and particulate matters get released into the atmosphere through burning of fossil fuels including petroleum and coal. Such activities cause the release of both fine and coarse particles, nitrogen, oxygen and sulfur compounds, radioactive substances and halogens. The main sources of this form of pollution are motor vehicles using either diesel or gasoline, rail roads, aircraft, agricultural burning and industrial processes among others (Awosanya, Sebiomo and Idiagi 612). According to Shafi (3), a combination of the effect of these processes results in the release of 91.0, 25.7, 30.2, 29.1 and 18.7 metric tons of carbon monoxide, particulate matte r, sulfur oxides, hydrocarbon and nitrogen oxides respectively. Pesticides have also been noted to cause a spread of ungraded ions in the air thus possibly contaminating the air. Metallurgical industries, petroleum refineries, fertilizer and chemical industries and pulp and paper mills have been noted to contribute greatly to air pollution. They produce gaseous emissions that pollute the air. Various solid and liquid wastes pollute water. Organic and mineral wastes and industrial by-products or effluents carried into water bodies cause pollution. Furthermore, pollutants emanating from agricultural fields containing phosphate and nitrogen fertilizers eventually reach water bodies. According to Shafi (4), these pollutants deoxygenate and intoxicate the water causing a lethal or sub-lethal reaction to the micro-organisms in the water. Examples of sources of water pollution include food processing industries such as canning, brewing, refineries and dairy industries, chemical plants, oil drilling wastes, blast furnace washing, rubber production factories and research laboratories among many others. Raven, Berg and Hassenzahl (405) also note that metallic wastes like zinc, lead, copper and mercury released as effluents or wastes from industries eventually reach water bodies. These not only deteriorate the quality of water but also get deposited in the bodies of the living organisms that consume the water. Additionally, sewage effluents, organic wastes and exudates promote the life of microbes that thrive on organic matter like algae, fungi, helminthes, bacteria and viruses. These are known to cause dangerous diseases in both the flora and fauna. Lastly, pollution of the soil could result from the insanitary habits of humans or disposal of semi-solid and solid wastes. The atmospheric fall-out also causes soil pollution. The current rapid urbanization has led to limited space in which solid wastes could be deposited (Shafi 6). The disposal of these wastes on land has led to toxic materials seeping deep into the soil which affects the course of ground water. Agricultural practice has seen pesticides, manures and fertilizers introduced to lad leading to chemical and biological contamination. Wastes containing micro organisms pollute soil and could cause these micro organisms to enter into the food chain and subsequently consumed by humans. Radiation could be