Essays Tagged: "Cretaceous–Paleogene extinction event"
Extinction
EXTINCTIONTwo-hundred and thirty million years ago the first dinosaur-like creature roamed the earth ... reatures ever to live on earth had become extinct.Dinosaurs were not the only victims of this 'mass extinction.' There were many other species that were killed off. During what is known as the K-T ext ... and sea urchins became extinct.Paleontologists have proposed scenarios that could have caused these extinctions. One such scenario involves the growing number of small mammals which ate dinosaur eggs, ...
Subjects: Science Essays > Biology
Describe using examples the impact of mass extinction on species diversity.
ity, became extinct, typically within ten million years or so of their first appearance. This large extinction rate has had an important influence on the evolution of life on Earth.Humans are presentl ... ution of life on Earth.Humans are presently causing the record mass extinction of species since the extinction of the dinosaurs 65 million years ago. If current trends carry on one half of the entire ...
Subjects: Science Essays > Biology
A short introduction to the study of the extinction of the dinosaurs
Various theories have been put forward for the mass-extinction about 65 million years ago at the end of the cretaceous period that caused the extinction ... who's food sources were not able to survive the changed conditions, simply died out causing a mass extinction of many plants and animals, most notably the dinosaurs.Despite its popularity, the Meteor ... re willing to believe that a meteor impact could have occurred, but don't accept that it caused the extinctions. It could have been the last straw that finished off an already dying breed.
Subjects: Science Essays > Biology
Did an asteroid killed the dinosaurs?
.…………………….…3Dinosaur information and extinction: …………………………… ... ………………….……5The main idea of dinosaur extinction……………………………&h ...
Subjects: Science Essays > Physics
The Causes of the Dinosaurs’ Extinction
65533;PAGE �1� Elizabeth Hoover Research EssayMay 7, 2013The Causes of the Dinosaurs' ExtinctionAbout sixty five million year ago something happened to change the Earth. At the end of th ... ent of all animal species, including dinosaurs, became extinct. This event is known as the K-T mass extinction because it occurred at the boundary between the Cretaceous (K) and Tertiary (T) time peri ...
Subjects: Science Essays > Earth Sciences