Examlex
In 2012,biofuels provided about _______ of the energy used in the United States,more than any other type of renewable resource.
Triple Somersault
A gymnastic or acrobatic maneuver involving three complete revolutions of the body in the air.
Guinness Book
Refers to the "Guinness World Records," a reference book published annually, listing world records both of human achievements and the extremes of the natural world.
Topic Sentence
The introductory sentence in a paragraph that summarizes the main idea or point.
Open-Heart Surgery
A type of surgical procedure performed on the muscles, valves, or arteries of the heart requiring the chest to be opened.
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