Biology
Biology, 18.07.2019 05:30, afifakiran5226

How do scientists use relative and absolute ages of rock layers to estimate the ages of fossils?

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Biology, 31.08.2019 06:00, naynay1997
Why did identifying rock layers because of their fossils become important? (a) it scientists determine the age of metamorphic rocks (b) it allowed scientists to determine the age of strata (c) it showed that layers are all different ages (d) it was the first indication that the layers were from different ages
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Biology, 28.09.2019 12:30, yadi64
Geologists use radioactive dating for which of the following? (a). identifying the relative ages of rock layers. (b). determining the absolute ages of rocks. (c). telling how radioactive substances is (d). collecting evidence of fossils.
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Chemistry, 07.10.2019 21:20, franklynvaldez01
The longest question in which of these terms means that "the present is the key to the past”? a. superposition b. uniformitarianism c. relative age dating d. absolute age datingif you are younger than your best friend but older than another friend, do you know your absolute ages, relative ages, or both? a. relative ages only b. absolute ages only c. both relative and absolute agesif you are younger than your best friend but older than another friend, do you know your absolute ages, relative ages, or both? a. relative ages only b. absolute ages only c. both relative and absolute agesdifferent forms of this element are often used in a type of radiometric dating that determines the ages of objects up to about 40,000 years. a. argon b. carbon c. uranium d. potassiumwhile an organism is alive, what happens to its c-14 to c-12 ratio? a. it increases. b. it decreases. c. it remains constant. d. it fluctuates up and down.in a stack of undisturbed rock layers, the upper layers are younger than the lower layers. this is also stated as the law of a. superposition b. faunal succession c. original horizontality d. cross-cutting relationshipscertain substances have been used to determine the absolute age of objects up to several years. a. stable; billions b. stable; millions c. unstable; billions d. unstable; millionsthe tilting or folding of horizontal layers must occur a. after the layers have formed b. before the layers have formed c. during the formation of the layersin an undisturbed stack of rock layers, each containing fossils of once-living organisms, where would some evidence of the most ancient life forms most likely be found? a. at the top of the stack b. near the top of the stack c. in the middle of the stack d. at the bottom of the stackfossils are most valuable in to determine the age of a rock. a. relative b. absolute c. relative or absolute
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