You know that it costs money to produce energy. Using energy can
also have an impact on the environment. For example, coal costs
less than some other fuels. However, combustion is a chemical reaction
that can produce pollutants, and burning coal produces more pollution
than burning other fossil fuels. How do energy providers convince
consumers that their service is the most cost-efficient and the
least polluting? What are the environmental impacts of various energy-producing
sources used in the United States? How can these impacts be compared
to the cost of energy produced.
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