The pie chart shows what is believed to use the most energy in a household. Clearly space heating uses much more than any other.
The writer recommends getting an energy evaluation, changing light bulbs CFL or LED, heating and cooling more efficiently, recycling, and using water in a more efficient way. Each is a simple way to change the amount of energy wasted in a home.
MLA:
5 Simple Ways to Save Energy (green|spaces)
http://www.greenspaceschattanooga.org/saving-energy-in-your-home/
APA:
5 Simple Ways to Save Energy (green|spaces)
http://www.greenspaceschattanooga.org/saving-energy-in-your-home/