1Environmental EngineeringStudents NameInstitutional Affiliation2Q1.To treat the wastewaters in a biological process, microorganisms such as the bacteria areusually grown in rectors or the aeration basins. On the other hand, to promote the oxidation ofthe organic compounds and the hazardous wastes, the bacteria that is present in the soil is fedwith oxygen and nutrients. In the examples that have been given, it is critical to indicate that thebacteria are used to oxidize the organic matter to water and carbon dioxide. Additionally, thebacteria do require organic carbon that is usually found in the wastewaters and various types ofthe hazardous waste material, and this is in addition to the phosphorous, nitrogen and nutrients.Since most of the bacteria are aerobic, it is also critical to note that they do need sufficientoxygen. Therefore, they are the most significant types of microorganisms, which could be usedin the wastewater treatment (Faust, Samuel & Osman, 337).Q2.major air pollutants purported to be causing the global warming phenomenon are calledgreenhouse gases. Scientists and engineers that support the global warming theory suggest thatcarbon dioxide and water vapor that is released during the combustion of fossil fuels is primarilyresponsible for the increase concentration of carbon dioxide and water vapor in the atmosphere.Major sources of fossil fuel combustion include automobiles, trucks, air planes, home heatingwith coal or natural g ...

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