A statistical test for correlation between crater formation rate and mass extinctions
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چکیده
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the relationship between eq, iq and test format: a study on test fairness
the major aim of this study was to investigate the relationship between iq, eq and test format in the light of test fairness considerations. this study took this relationship into account to see if people with different eq and iq performed differently on different test formats. to this end, 90 advanced learners of english form college of ferdowsi university of mashhad were chosen. they were ask...
15 صفحه اولTemporal acuity and the rate and dynamics of mass extinctions.
In the excitement over the discovery of high levels of the element iridium at the Cretaceous-Paleogene (KPg) boundary and the high likelihood that the KPg mass extinction (66Ma) was caused by the collision of an extraterrestrial object with Earth (1), many envisioned a general theory of mass extinctions driven by impacts (2). Others favored an endogenous process, identifying correlations betwee...
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Mass extinctions and macroevolution
—Mass extinctions are important to macroevolution not only because they involve a sharp increase in extinction intensity over ‘‘background’’ levels, but also because they bring a change in extinction selectivity, and these quantitative and qualitative shifts set the stage for evolutionary recoveries. The set of extinction intensities for all stratigraphic stages appears to fall into a single ri...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1996
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/282.4.1407