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Which of these is an indication that a chemical reaction has occurred? (boiling of a substance ,freezing of a substance, formation of a gas, melting of a substance)
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Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?
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What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays
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The biomedical technique in which a part of the brain is destroyed with electric current is known as a. electroconvulsive therapy b. prefrontal lobotomy c. bilateral cingulotomy d. tardive dyskinesia
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Which of these is an indication that a chemical reaction has occurred? (boiling of a substance ,fre...
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