Computers and Technology

Computers and Technology, 14.07.2019 10:30, Jcmandique3444

Which of the following statements is true? a: carbon-14 can only be used to date rocks. b: oxygen speeds the decay of dead organisms. c: in turbite beds, the bottom layer is older than the top layer. d: epeirogenic changes deform the crust.

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Chemistry, 27.06.2019 07:00, jbearallen9557

Carbon-14 if often used for radioactive dating, but it has its limitations. uranium-238 or lead-206 are most often used to date rocks. why would u-238 or pb-206 be more useful than c-14 when dating rocks? a) rocks do not contain any carbon for dating purposes. b) carbon-14's half-life is much too long to use for dating rocks. c) the half life of carbon-14 is about 5700 years and is too short date rocks. d) carbon-14 is only found in living things; it can only be used to date remains.

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10 points to first person which of the following is true of carbon carbon is present in all organisms and in the atmosphere carbon moves from consumers to producers carbon must be fixed by bacteria before other organisms can use it carbon can only be released from dead organisms by decomposers

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Biology, 05.07.2019 04:30, Jaedenaleinson

Which statement explains why carbon-14 dating cannot be used to date ancient rocks? carbon-14 decays at a varying rate. carbon-14 decays relatively quickly. carbon-14 can be used only to date the remains of organisms. carbon-14 has a half-life that is much longer than potassium.

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Physics, 03.10.2019 07:30, kandigirl9990

carbon-14 if often used for radioactive dating, but it has its limitations. uranium-238 or lead-206 are most often used to date rocks. why would u-238 or pb-206 be more useful than c-14 when dating rocks? a) rocks do not contain any carbon for dating purposes. b) carbon-14's half-life is much too long to use for dating rocks. c) the half life of carbon-14 is about 5700 years and is too short date rocks. d) carbon-14 is only found in living things; it can only be used to date remains.

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