Dinosaur Essay -- essays papers

DinosaurDinosaurs extinct or Natural Causes As geologic time goes, all the dinosaurs invigoration on earth suddenly disappe ard. How did these dominated and gigantic creatures really fret? Was it a slow extinction through natural causes, or did it lead suddenly? These drumheads give rise to galore(postnominal) different beliefs on how the dinosaurs disappeared oer 65 million years ago. Something happened sixty-five million years ago, at the end of the Cretaceous period that was so devastating that it altered the line of products of life on earth. Extinction is easily defined the birth send fails to keep up with the devastation rate. However, the definition does non answer the question ab reveal the nature or causes of extinction. Since so many different causes of death of the dinosaur arose, paleontologists generally divide extinction into two main types. The first is called minimise extinction, or the isolated extinction of a species due to a form of cause. Inc luded in these background extinctions is out competition (the fight of the food), depletion of resources in a habitat, changes in climate, development or destruction of a climb range, river channel migration, eruption of a volcano, the drying of a lake, or the destruction of a forest, grassland, or wetland habitat. The second type of extinction is called mass extinction. There are four main components Large numbers species go extinct many types of species go extinct the effects are global and the effects slide by in a geologically short period of time (Encarta). The dinosaur could not have lived forever. No creature, plant, and bacteria are forever, not even serviceman Sapiens. Extinction is the ultimate fate of all species. One theory on how the dinosaurs became extinc... ... environmental crisis may have spelled disaster for the dinosaurs. It had to be so wholesale that it affected countless other forms, including the dinosaurs. It is how these successful creatures wer e eliminated from the orbiter is a delightful mystery. however, scientist cannot determine how dinosaurs really became extinct. Perhaps something fell the sky and struck the planet causing a huge dust cloud, utterly shutting out the sun and forcing the dinosaurs into extinction. But why did the little mammals survive, or the crocodiles and birds? Current narrate suggests that the sun or a greenhouse effect terminated the dinosaurs sixty-five million years ago (Colbert).BibliographyColbert, Edwin Harris, 1905- Dinosaurs Their Discovery and Their World. New York, E. P. Dutton & Co.,INC., 1961, 1st ed.Encarta cyclopedia Article, Dinosaur, 2001