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Stage in which a star’s outer layers have started to cool and grow outward?
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Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table
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15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.
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What are the four points of food safety?...
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