# Science

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What factors might cause my contribution of carbon dioxide emissions to deviate substantially from the US national average of approximately 20 tons? I used CO2 emissions from electricity, natural gas, my car, waste (& reducing by recycling), and taking a short airplane trip and came up with about 10 tons per year.

• Science -

You might not travel by vehicle or use as much energy, or if you owned a mansion, you might use a lot more electricity...

• Science -

Several things could make a difference.

* the distance you travel in your car
* the temperature you keep your home (cooler in winter, warmer in summer)
* using a clothes dryer, heat cycle on the dishwasher
* living in a 900-square-foot home as opposed to a 2,000-square-foot home
* having energy-efficient car and home appliances
* recycling rather than throwing away

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