Did you know one-tenth of all power in a house is used by items that consume power even when they're switched off? Remembering to unplug these items, or closing the refrigerator door when it's not necessary to have it open, are two simple ways to save energy. Readers learn those facts and many more in this empowering guide to be an active citizen of this planet, as crucial advice is included alongside full-color photographs, fact boxes, and graphic organizers. A glossary and index contain words to broaden readers' vocabularies and key terms found throughout

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