Get help now

How Dinosaurs Became Extinct

  • Pages 2
  • Words 393
  • Views 409
  • dovnload

    Download

    Cite

  • Pages 2
  • Words 393
  • Views 409
  • Academic anxiety?

    Get original paper in 3 hours and nail the task

    Get your paper price

    124 experts online

    Something happened 65 million years ago, at the end of the Cretaceous period, something so devastating that it altered the course of life on earth. It seems like it happened so sudden, as geologic time goes, that almost all the dinosaurs living on earth disappeared. So how did these dominant creatures just die off? Was it a slow extinction, or did it happen all of the sudden? These questions bring rise to many different beliefs on how the dinosaur disappeared over 65 million years ago.

    Extinction itself is easily defined: When the birth rate fails to keep up with the death rate, it is called extinction. But, the definition does not answer the question about the nature or causes of extinction. Paleontologists generally divide extinctions into two types, for that of different causes arose. The first is called background extinctions, isolated extinctions of species due to a variety of causes. Included is out competition, depletion of resources in a habitat, changes in climate, the development or destruction of a mountain range, river channel migration, the 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 extinctions. There are four main components involved: Large numbers of species go extinct; many types of species go extinct; the effects must be global; and the effects must occur in a geologically short period of time.1

    The dinosaur could not have lived for ever. No creatures, no plants, no tiny bacteria are forever, not even Homo sapiens. Extinction is the fate of all species. One theory on how the dinosaurs became extinct is that of carbon dioxide, and the ³greenhouse effect². Volcanoes produced the proposed conditions. A massive volcanic eruption could have saturated the atmosphere with carbon dioxide so that it caused a sharp rise in temperatures worldwide. The excessive carbon dioxide would have permitted solar energy to enter the atmosphere but would have blocked the radiation of most surface heat back out into space, therefore causing the ³greenhouse effect². Rising temperatures could have killed off or reduced the activity of plankton, disrupting food chains and also messing up the plankton¹s normal role in converting carbon dioxide to oxygen through photosynthesis. From there it would not have been long for all the dinosaurs to have been suffering, and then to become extinct.

    This essay was written by a fellow student. You may use it as a guide or sample for writing your own paper, but remember to cite it correctly. Don’t submit it as your own as it will be considered plagiarism.

    Need a custom essay sample written specially to meet your requirements?

    Choose skilled expert on your subject and get original paper with free plagiarism report

    Order custom paper Without paying upfront

    How Dinosaurs Became Extinct. (2018, Jun 07). Retrieved from https://graduateway.com/how-dinosaurs-became-extinct/

    Hi, my name is Amy 👋

    In case you can't find a relevant example, our professional writers are ready to help you write a unique paper. Just talk to our smart assistant Amy and she'll connect you with the best match.

    Get help with your paper
    We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy