Essay PreviewMore ↓
Theories of the Extinctions of the Dionsaurs:
Dinosaurs became extincted 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 is 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. 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 greenhouse effect.
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 greenhouse effect. Rising temperatures could
have killed off or reduced the activity of plankton, disrupting food chains and also
messing up the plankton's 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.
My theory of the extinction of the dinosaurs is the theory of the comet
How to Cite this Page
"Extinction On Dinosaurs." 123HelpMe.com. 19 Nov 2019
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- Rapid climate change also ends up on the suspect list of possible dinosaur extinction events. During the latter part of the Cretaceous Period continents broke up causing volcanoes to erupt and fill the sky with gas and ash resulting in a drastic climate change (“Dinosaurs Climate Change and Biodiversity”). The shifting of continents changed the Earth’s landscape, altering weather patterns and overall climate (“Dinosaur Extinction Theories”). Also, over a long period of time, climate gradually changed.... [tags: asteroid, climate change, food]
1734 words (5 pages)
- Extinction of Dinosaurs Many different theories exist as to why the dinosaurs went extinct. We know for sure most dinosaurs died out around 65 million years ago. The majority of scientists agree on a number of theories as to what brought the end of the dinosaurs. The most popular theory is that an asteroid ended the reign of the dinosaurs. Another theory, massive climate change in the pre-historic atmosphere, caused all the dinosaurs to die. Some scientists believe that mammals out competed dinosaurs for food and other resources.... [tags: asteroid, shock wave, crater]
1255 words (3.6 pages)
- Theories of the Extinctions of the Dionsaurs: Dinosaurs became extincted 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.... [tags: essays research papers]
569 words (1.6 pages)
- Theories of the Extinction of the Dinosaurs Controversy surrounds the extinction of the dinosaurs. According to one theory, dinosaurs were slowly driven to extinction by environmental changes linked to the creeping withdrawal of shallow seas from the continents at the end of the dinosaur era. Proponents of this theory propose that dinosaurs dwindled in number and variety over several million years. An opposing theory proposes that the impact of asteroid or comet caused catastrophic destruction of the environment, leading to the extinction of the dinosaurs.... [tags: Papers]
328 words (0.9 pages)
- The Role of Fungus in the Extinction of Dinosaurs The debate over what ultimately killed off the dinosaurs is an area of great interest to not only scientists, but everyone. The dominant thought seems to be that an asteroid struck the earth at the end of the Cretaceous period and killed off much of the fauna and flora inhabiting the earth. However, the sequence of events following that mass extinction has been fairly blurry until a recent discovery, published in a recent issue of Science, by paleontologists Vivi Vajda and Stephen McLoughlin.... [tags: Anthropology Essays Paleontology Papers]
1299 words (3.7 pages)
- Hypotheses on the Extinction of Dinosaurs In the early nineteen hundreds, dinosaur fossils were discovered and recognized around the globe. Greedy scientists and civilians, searching for their own prize skeleton, rushed to rip bones out of the ground, destroying the fossils as they went. It was not until later in the century that scientists and paleontologists began pondering how such widespread creatures disappeared. Currently, paleontologists debate the two main hypotheses of how the classic dinosaurs died: from volcanic activity or an asteroid impact.... [tags: Exploratory Essays Research Papers]
702 words (2 pages)
- Could an exploding star have been responsible for the death of the dinosaurs. This idea has become popular again as an explanation for the disappearance of the dinosaurs. An exploding star can blast material enormous distances into space. If this material reached Earth’s atmosphere, changes may have occurred that were harmful to life. We call an exploding star a supernova. Nova is the Latin word for new, and in ancient times, when an exploding star was observed, people often thought a new star was being born.... [tags: essays research papers]
394 words (1.1 pages)
- So what killed the dinosaurs. Without having any background education in science it is hard for the general public to comprehend such matters and they rely on the knowledge of the scientists in this field. Although there has been much research on the subject nobody has come up with a conclusive answer. And we are left to read the countless articles, all having their own opinions as to the mass extinction. One such theory is that a shift in the solar system could have caused the mass destruction.... [tags: Compare Contrast]
1267 words (3.6 pages)
- Extinction of Dinosaurs due to Asteroid Impact Nobody knows for sure exactly how the dinosaurs became extinct. However scientists have speculated for decades about possible events that caused the dinosaurs to die out. Possibilities range from asteroids, to volcanoes, to climate changes. One of the more popular or well-known extinction theories involves the belief that an asteroid struck the Earth, causing devastating effects, and triggering mass extinctions around the end of the Cretaceous period.... [tags: Exploratory Essays Research Papers]
1262 words (3.6 pages)
- “Sex, Drugs, Disasters, and the Extinction of Dinosaurs” is written by Stephen Jay Gould, professor of geology and zoology at Harvard. This essay is one of more than a hundred articles on evolution, zoology, and paleontology published by Gould in national magazines and journals. It tells about scientific proposals for the extinction of dinosaurs – a confusing but an exciting problem that humanity tries to solve. By analyzing and describing each of the claims for the reptiles’ demise – sex, drugs, and disasters – Gould differentiates bad science from good science and explains what makes some theories silly speculations, while the other, a testable hypothesis.... [tags: essays research papers]
771 words (2.2 pages)
hitting the earth. The reason why is believe this is that it seemes reasonible to me. The
comet most of caused flooding and a big cloud of smoke that would lead to know sun.
The dinosaurs probably died from being froozen because of no sun.
The proof the comet theory of the dionsaurs is a huge creator it left in Mexico. The
creator is about mile long. It must of been such a impact that it caused the death of most
of the dinosaurs. Other dinosaurs died from no sun which made the freeze to death.
Today there are still very good theories in which the dinosaurs died. It has been
a mystery for a long time for which one is correct are al of them are incorrect. We will
never really be sure how the dinosaurs died. It had been over 100 years we known about
the dinosaurs and still today we do not know the truth in which they died.