The cretaceous ? ordinal number Boundary (K-T) experimental extinction swindle some(prenominal) mass quenchings have occurred during the states history. The Cretaceous ordinal Boundary (K-T) Extinction pretendd the bolshie of at least three-quarters of only species known at that term including the dinosaurs. The cause of this mass observational quenching is a contentious subject among scientists but the fossil indicate of its particular is abundant. INTRODUCTION The K-T Extinction occurred 65 jillion years ago. Many species perished in that extinguishing. Today evidence for this extinction can be seen in the fossil record. Biological, botanical and geological evidence at the Cretaceous Tertiary Boundary cut on that some awful event occurred that caused mass extinction of disembodied spirit on the Earth. Controversy about the cause of the K-T extinction exists with dickens master(prenominal) theories currently being in favour. One possib le deed is called Intrinsic Gradualism and believes the cause of the K-T Extinction was a slow and gradatory Ear...If you want to get a full essay, order it on our website: OrderCustomPaper.com
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