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Q13: What are some disadvantages of producing ethanol
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Q74: Most fresh water lakes _.<br>A)contain no dissolved
Q76: How many significant figures are in the
Q87: Which takes more energy?<br>A)organic farming<br>B)regular farming<br>C)synthesis of
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Q114: The process by which inorganic wastes lead
Q124: A wooden object has a mass of
Q249: Elements in Group 8A are known as