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Extinction of Dinosaurs

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Element iridium and other heavy metals, blieved to be byproducts of a meteor impact, wre found in sediments laid down at the time of the dinosaurs demise. Avarezs theory was further bolstered when, i 1990, gologists discovered a possible site for an extinction-level impact, a200 km wide crater in southern Mexico. Mller et al. wo were experts in the field of chemical engineering presented this theory and concluded that main reason of dinosaur extinction was the exceeded birth rate of males as a result of some variation.

I was a condition where under the gender of the brood was an outcome of temperature. Tis theory does not raise any criticism against other theories of dinosaur extinction. Tey don’t oppose the idea that the stroke of meteorite upon the planet and its responding impacts in the long run to kill dinosaurs, bt further elaborate it. Tey elucidate that among mammals like human beings and other creatures gender is genetically determined in an equal ratio. Wereas, i some cold blooded animals like fish and reptiles, sx determination on condition of temperature.

I these conditions remain ideal, te male/female ratio can be 1: 1 However, canging conditions of temperature may cause a slant towards either of the two genders. Cnsequently, aslant is towards males may direct a turn down in overall population. Tey further explain that this mechanism of gender classification is being even presently observed among the crocodiles which are basically alike dinosaurs in terms of both biology and physiology. Tus the idea of dinosaur this way is strengthened. I order to demonstrate the impacts gender on overall population, te theorists utilized the idea of the “Evolution of Y Chromosome” in mankind and linked it with mathematical techniques.

Mreover, een better representation is being proposed toward the search of climatic change impacts upon dinosaurs and their eggs in varied types and sizes. Te researchers believe that there was a sudden but extended turn in the climate and was not coped y the dinosaurs and they had an exceeded number of males which ultimately resulted into their extinction. (iller et al. Tis theory suggests dinosaurs were to keep up with the many changes that were occurring on the earth toward the end of the Cretaceous period.

Dring the dinosaur age, te earth was very different from the earth today. Te climate was generally warmer than it is in the same. ..

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preview essay on Extinction of Dinosaurs
  • Pages: 5 (1250 words)
  • Document Type: Essay
  • Subject: Science
  • Level: Masters
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