Jenny finds a sample of a mineral known as zircon in a sample of rock material. She takes it back to her laboratory and measures the amount of radioactive uranium in it compared to the amount of radioactive lead. What additional piece of information must Jenny have in order to determine the age of the zircon?
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Acity developer is considering building an amusement park near a local river. what tool would the developer predict the future path of the river? a. series of city maps from nearby cities b. series of topographic maps in chronological order c. guide map of the new amusement park d. thermal map of the area
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Asap will mark geography final plz ! what are the benefits of international aid? (give me the right evidence )
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Which layer surrounds the center of the earth? a: crust b: core c: mantle
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Jenny finds a sample of a mineral known as zircon in a sample of rock material. She takes it back to...
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