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Chemistry, 23.06.2019 01:00
Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green
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Which of the following is described by the equation h2o(s)+ heat=h2o(i) a freezing melting condensing evaporating
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People who practice which of the following diets may run the risk of not getting enough iron. a. gluten free or vegan diet b. diet for managing diabetes c. vegan diet d. gluten free diet
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Chemistry, 23.06.2019 15:30
Which term defines a type of oxygen that forms a protective layer miles above the earth a. fossil fuel b. smog c. pollution d. ozone
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