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Which fossil has been found in North America and western Europe, and is a key piece of evidence in support of the theory of continental drift? A. trilobite Paradoxides B. crinoid Echmatocrinus C. coral Coelenterata D. bryozoan Fenestrellina User: The presence of stromatolites in some very old rocks can help scientists determine the absolute age of those rocks back to about A. 25,000 years. B. 45 million years. C. 500 million years. D. 3.5 billion years.
Weegy: D)3.5 billion years User: How can scientists determine the absolute age of a rock sample? A. by interpreting fossils within the sample B. by using radiometric dating to test the sample C. by identifying the sample's position within the strata D. by examining the crystalline structure of minerals in the sample Weegy: They use radiometric dating. User: The ratio of uranium-238 to lead-206 in a rock sample can be used to determine the sample's A. absolute age. B. relative age. C. radioactivity. D. mass. Weegy: C. radioactivity User: Which characteristic is NOT used to categorize different types of landforms? A. elevation B. slope C. orientation D. aridity Weegy: Orientation is NOT used to categorize different types of landforms. (More)
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Asked 11/15/2012 11:29:33 AM
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Which landform is NOT classified based on the characteristics of its slope? A. hill B. ridge C. basin D. mesa
Weegy: A. hill is NOT classified based on the characteristics of its slope (More)
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Asked 11/15/2012 11:37:41 AM
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which of these processes is least likely to weather theese layers? A. WInd B. Deposition C. Running water D. Alternate freesing and thawing
Weegy: C. Running water is least likely to weather layers. (More)
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Asked 11/15/2012 11:59:01 AM
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what does iff mean User: Weathering of rock AND sedimentation ultimately lead to the formation of A. soil. B. intrusive rock. C. bedding planes. D. joints and faults.
Weegy: Weathering of rock AND sedimentation ultimately lead to the formation of B. intrusive rock (More)
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Asked 11/15/2012 12:40:26 PM
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