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An igneous rock that originally contained 100 grams of radioactive potassium-40 now contains 25 grams of potassium-40. What is the age of this rock?
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Which experiment would most likely contain experimental bias ?
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Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food
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An igneous rock that originally contained 100 grams of radioactive potassium-40 now contains 25 gram...
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