To Determine the Age of Rocks,the Decay of Which Radioactive

question 61

Multiple Choice

To determine the age of rocks,the decay of which radioactive element(s) can be used?

• A) carbon-14
• B) uranium-238,rubidium-87,and/or potassium-40
• C) phosphorus-40,uranium-234,and/or rubidium-87
• D) carbon-14 and uranium-238
• E) uranium-240

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A concept in language acquisition where young children assume that objects only have one label.

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