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All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time
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With the word calcite wich completes the analogy mineral, erosion, marble, or aragonite
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All organisms contribute some water to the water cycle by conducting
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Biology, 22.06.2019 06:30
Match the pollutants. 1. a chlorofluorocarbon smoke 2. a biodegradable organophosphate insecticide freon 3. particle pollution paint 4. hazardous waste monoxide 5. carbon is completely burned malathion 6. carbon is incompletely burned dioxide
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The solid waste produced by a sewage-treatment plant is called slimy discharge sludge runoff...
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