Nobody downloaded yet

Extinction of Dinosaurs - Essay Example

Comments (0) Cite this document
Summary
Dinosaurs were real animals that once lived on the earth, but they died out about 65 million years ago. Since the very first kind of human did not appear on the earth until about 3.5 million years ago, it is clear that no one has ever seen a living dinosaur. …
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER93.7% of users find it useful
Extinction of Dinosaurs
Read TextPreview

Extract of sample "Extinction of Dinosaurs"

Download file to see previous pages The disappearance of the dinosaurs is in some ways a great mystery. During the time the dinosaurs lived, many new kinds developed and other older kinds died out. Not all kinds died out at once, but by the end of the Cretaceous period, the last of the dinosaurs had disappeared. Scientists have proposed several theories to explain the disappearance of the dinosaurs. There are two main theories of Dinosaur extinction as follows: the Asteroid Theory. In 1980 the asteroid theory was proposed by Luis and Walter Alvarez. This theory is based on the discovery of unusually high concentrations of the rare metal iridium at rock levels close to the level of the last dinosaur remains. Iridium is more common in meteorites than in rocks found in the earth's crust. According to this theory, a large asteroid crashed into the earth about the time the dinosaurs disappeared. The force of the collision caused a huge cloud of dust to circle the earth. The dust blocked the sun's light for as long as five years. This killed many plants, and without food, the dinosaurs died too. ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Extinction of Dinosaurs Essay Example | Topics and Well Written Essays - 1250 words - 1”, n.d.)
Extinction of Dinosaurs Essay Example | Topics and Well Written Essays - 1250 words - 1. Retrieved from https://studentshare.org/science/1553558-extinction-of-dinosaurs
(Extinction of Dinosaurs Essay Example | Topics and Well Written Essays - 1250 Words - 1)
Extinction of Dinosaurs Essay Example | Topics and Well Written Essays - 1250 Words - 1. https://studentshare.org/science/1553558-extinction-of-dinosaurs.
“Extinction of Dinosaurs Essay Example | Topics and Well Written Essays - 1250 Words - 1”, n.d. https://studentshare.org/science/1553558-extinction-of-dinosaurs.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Extinction of Dinosaurs

Origin of flight of dinosaurs

...?The Origin of Flight in Dinosaurs The origin of flight is a topic that has been widely debated since the Ancient Greeks, and is one that has not yetbeen fully understood. There are several anatomical developments in modern birds and paleontological discoveries, such as the furcula used for skeletal bracing (Hui, 2002) that can be used to discover how flight is possible and give clues as to how the skill evolved. Using two main theories, it is possible to speculate whether flight evolved from the tree down (from a jumping, gliding, arboreal ancestry) or from the ground up (from a bipedal, leaping, cursorial ancestry). In the course of this essay, these two hypotheses will be discussed and contextualized by an investigation... several...
8 Pages(2000 words)Research Paper

Impact of Species Extinction

...?Impact of Species Extinction In the midst of human evolution, many changes have occurred in the natural way of life of fauna and flora. Competition for resources has increased remarkably especially with increase in human population. Although human beings are mandated by nature with the responsibility of regulating the rest forms of life, there seems to be a challenge in meeting this obligation. Human beings have been the primary factor in contributing to extinction of many forms of animal and plant life. Sadly, the way in which man treats animals raises issues of ethical concern considering that animals have rights too. Despite the increased knowledge on pros and cons of species...
5 Pages(1250 words)Essay

Extinction of Banks

...Extinction of Banks A Paper Submitted to In Partial Fulfillment of the Requirements for the By of Student) (Date) Introduction Banks are facing extinction due to lack of measures to address emerging needs in the financial markets. There is the need to institute measures that embrace innovation in order to avoid extinction. The emergence of mobile financial institutions has given the banks a big blow as the new institutions are providing better and efficient services. Through the perfect market assumption, the Modigliani-Miller (MM) theorem posits that banks have no major roles. Financial innovations and deregulations have enabled the financial markets to achieve perfection with...
10 Pages(2500 words)Assignment

Dinosaurs (In Science)

..., clawed and jaws,’. So far, the remains of over 1,000 different dinosaur species have been identified from fossils though technically, birds are feathered dinosaurs, meaning dinosaurs aren't really extinct at all. The fact that some dinosaurs have been found which are feathered adds emphasis to evolutionary ideas and the hypothesis that birds are direct descendants of some dinosaurs, an idea first put forward as long ago as 1870 ( Stone 2010) brings to mind other scientific questions such as who are the predecessors of mankind. Some, although not all dinosaurs, are known as being ‘bird hipped’ because of their particular...
4 Pages(1000 words)Research Paper

Dinosaurs Extinction

...Dinosaurs Extinction Over the times, scientists and historians have attempted to explore the exact cause or a chain of causes that led to the extinction of dinosaurs. A study by Michael (1) focused on a range of theories that sought to expand the understanding and points of linkages between the theories and the many school of thought that attempt to explore the depths of this historical and scientific phenomenon. The meteorite theory and the scientific theory remain some of the two most compelling explanations of the precise cause that led to the extinction of the dinosaurs. The author explores both the strengths and weaknesses of these...
5 Pages(1250 words)Essay

Mass Extinction

...Ching Wong Greathouse Biological Anthropology 20 April 2007 Is Mass Extinction Our Future A few hundred millions years ago, there was a group of huge animals living on this planet. They are known as the dinosaurs. However, they were wiped out with many other species from earth about 65 million years ago (Ananthaswamy, 2004). Their depletion was recognized as one of the mass extinctions. There were six mass extinctions identified in the last four billion years, and many scientists are expecting the seventh to happen. They called it the Holocene extinction event (Wikipedia, 2007). It is believed that about one half of the species will be depleted during...
4 Pages(1000 words)Essay

Dinosaurs

...Dinosaur Dinosaurs were the most dominant vertebrate animals with terrestrial ecosystem for over 160 million years. Under scientific terms, dinosaurs are usually defined as all descendants of the most recent common ancestor of triceratops and modern birds. Body temperature: In the early 20th century both scientists and general public considered them lazy cold blooded animals but in 1970s with the evidence that dinosaurs are the descendents of birds scientists' considered them active animals with elevated metabolism. But some scientists were of the view that like our modern Alligators, Galapagos tortoise and Komodo dragons these dinosaurs were also able...
1 Pages(250 words)Research Proposal

KT boundary

...KT boundary KT Boundary: In the BBC radio program, Melvyn Bragg and the other panelists discuss the geological KT boundary that led to the extinctionof dinosaurs and the rise of mammals on earth. The thin grey line of clay inside the earth seen across the entire planet is known as K T Boundary. ‘K’ stands for cretaceous period and ‘T’ for tertiary period. Particular land movements in some areas have made this line to disappear in some areas. This layer is of three inches’ thickness in Central America and in Italy it has only a thickness of one centimeter. This unique layer in terms of its contents and age is believed to have been created sixty five million years ago. Geologists believe this demarcating line to be a clue...
2 Pages(500 words)Essay

Extinction of Species

...Extinction of species (animals, plants) Introduction: The modern times have improved the life style of mankind and has provided it with large number of facilities. All around us we see technology and science dominating us in one way or other. Technology, industrialization and machine dominance are the buzz words in modern times. However there are certain costs of this technological improvement. These costs are not only subject to the mankind rather the entire living beings which include the birds and animals equally. They also come in form of the threat to the natural balance of the environment and the species related to it. Thesis Statement: The recent times have shown alarming increase in the extinction rates and the speed... at which the...
6 Pages(1500 words)Research Paper

About animal extinction

...Animal Extinction In the same way that species evolve, they can also become extinct. To become extinct is the end of an organism or a species. Throughout human history, many species have become extinct and others are currently endangered and could become extinct if not protected. The extinct animals range from fish species such as the lung fish to larger wild animals such as the dinosaurs. A species can become extinct for various reasons that include but not limited to human activities, ice ages, and even meteor collisions. In spite of the many reasons behind extinction, human activity...
5 Pages(1250 words)Research Paper
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Essay on topic Extinction of Dinosaurs for FREE!

Contact Us