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Choosing a fuel for a new machine is an important part of the design process and must take into consideration any environmental impact and waste produced by using the fuel. Fossil fuels, _______ resources including ________, natural gas, and oil, produce large amounts of harmful _______ when burned. Sustainable fuels, ______ resources including _______ and wind power, are considered more environmentally friendly because they do not produce much any waste. These fuels, however, can still have a large impact on the environment aesthetically by requiring large tracts of land for power collectors. So the pros and cons of each fuel must be weighed before choosing a fuel for the project.
Options:
greenhouse gases, solar power, renewable, nonrenewable, coal