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Which principle tells us that rock layers separated by a valley, but otherwise similar, are assumed to have once been continuous? A. superposition B. faunal succession C. original horizontality D. lateral continuity
Weegy: D. lateral continuity User: Organisms with hard mineralized parts, such as shells or bones, are found in the fossil record, but organisms without such hard parts are not preserved as fossils. A. True B. False Weegy: A. True. Organisms with hard mineralized parts, such as shells or bones, are found in the fossil record, but organisms without such hard parts are not preserved as fossils. (More)
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Asked 3/21/2012 7:54:45 PM
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Which scientist is known for first recognizing the principle of faunal succession? A. Charles Darwin B. James Hutton C. William Smith D. Nicolaus Steno
Weegy: The occurrence of faunal succession was thoroughly documented by Smith in England during the first decade of the 19th century, and concurrently in France by Cuvier User: To be a useful index fossil, the organism should have been found in a broad habitat range when it lived on Earth. A. True B. False Weegy: T User: While the principle of original horizontality is widely applicable, there are some exceptions to it, such as sand deposits that can be laid down at slight angles. a. True b. False Weegy: T User: An igneous intrusion that cuts through a layer of sedimentary rock must be older than the sedimentary rock it cuts through. a. True b. False Weegy: F User: Discuss how relative and absolute dating are used to assign ages to rocks. Specifically, how are the two dating methods different from each other? Discuss the technique of absolute dating commonly used to date rocks. Weegy: I am sorry weegy does not answer long answers questions. User: Biostratigraphy is an important absolute dating technique. a. True b. False Weegy: T User: What are isotopes? a. atoms of different elements with the same number of protons b. atoms of the same element with the same number of neutrons c. atoms of the same element with the same number of protons but different numbers of neutrons d. atoms of different elements that decay to the same radioactive by product Weegy: Two or more varieties of the same chemical element. Isotopes have different masses because they have different numbers of neutrons (for example 18O and 16O), thus they have different physical and chemical properties. [ Unstable iostopes undergo radioactive decay. Read more: ] (More)
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Asked 3/21/2012 7:57:21 PM
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Which of the following terms best describes the nucleus of a radioactive element? a. unchanging b. explosive c. unstable d. energized
Weegy: Unstable is the term that best describes the nucleus of a radioactive element. (More)
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Updated 299 days ago|3/25/2016 4:50:38 PM
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Dendrochronology is most useful in tropical areas where trees grow very tall. a. True b. False
Weegy: a. True. Dendrochronology is most useful in tropical areas where trees grow very tall. (More)
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Asked 3/21/2012 8:16:29 PM
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Dendrochronology is most useful in tropical areas where trees grow very tall. a. True b. False
Weegy: a. True. Dendrochronology is most useful in tropical areas where trees grow very tall. User: If a radioactive nuclide has a half-life of 1.3 billion years and it is determined that a rock contains 25% of its original amount of this nuclide, about how old is the rock? a. 1.3 billion years b. 2.6 billion years c. 0.65 billion years d. 3.9 billion years Weegy: C, 0.65 billion years (More)
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Asked 3/21/2012 8:17:35 PM
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