Some scientists believe that carbon emissions, especially from the burning of fossil fuels, contribute significantly to global

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Some scientists believe that carbon emissions, especially from the burning of fossil fuels, contribute significantly to global warming and that this can be combatted if individuals take steps to limit their use of carbon-based fuels. Various organizations and individuals are increasingly concerned about their “carbon footprints.” Websites such as TerraPass

http://www.terrapass.com/carbon-footprint-calculator-2/

and Carbon Footprint

http://www.carbonfootprint.com/calculator.aspx

provide carbon-footprint calculators. Test drive these calculators to determine your carbon footprint. Exercises in later chapters will ask you to program your own carbon-footprint calculator. To prepare for this, research the formulas for calculating carbon footprints.