This website uses cookies to ensure you have the best experience. Learn more

The Continental Drift Theory And It's Effects On Evolution.

641 words - 3 pages

Continental Drift is the principle that the continent landmasses have not remained in fixed positions, but have moved around the earth's surface apparently independently. It is important in evolution because of the effects it has had on evolution and taxonomic diversity, brought about by the collision and moving apart of landmasses. The drifting apart of land masses brings about vicariance, where organisms are split up by the development of barriers, isolating descendent populations which then evolve to form new taxa.Pre-continental drift theory, it was believed that species originated in a particular area, and spread out from there to colonise new habitats. However, it was noted that on a worldwide scale many taxa had obvious close relatives in regions that were geographically widely separated with natural barriers i.e.; oceans, deserts or mountain chains. Therefore, continental drift theory was able to explain many previously unanswered questions. An example of this is Nothofagus. Nothofagus is restricted to the southern hemisphere, and is widely dispersed geographically. Although there are significant morphological differences between the species of Nothofagus, they all have seeds seemingly poorly adapted for long range dispersal, and are also intolerant of immersion in salt water. Continental drift reconstruction recognises that the southern continents were once united as a single massive continental land mass called Gondwanaland, and this lends weight to the vicariance hypothesis. Further evidence comes from fossil record, where remains of pollen grains of Northofagus have been found in regions outside the present range of any living species, namely Antarctica, Western Australia and Patagonia. This also confirms that the climate of Antarctica in Cretaceous times was very different from today. Landmasses undergo major changes of climate as they move across different latitudes. This affects evolutionary processes in that greater species diversity accumulates under tropical climatic conditions. Another effect that continental drift has on evolutionary processes is that of continental collision....

Find Another Essay On The continental drift theory and it's effects on evolution.

Alfred Wegener and the Continental Drift

513 words - 2 pages continents. Evidence that Wegener had listed to support his theory of continental drift were that the continents fit like a jigsaw puzzle, fossils match across seas, rock types and structures match, and ancient climates match.Wegener?s first idea was that the continents fit like a giant jigsaw puzzle. He noticed similar characteristics along the coastline of the South Atlantic. Scientists challenged this idea and said that the shorelines were modified by

Alfred wegner and continental drift Essay

575 words - 2 pages Alfred WegenerAlfred Wegener and Continental DriftChristian Colby5th period9/17/14AbstractThis paper explains how society affected Alfred Wegener's theory of continental drift. The theory was greatly criticized by society and the scientific community. Later in 1960 Harry H. Hess proposed the theory of sea floor spreading proving continental drift. I believe and it's commonly believed today that Wegener's theory is true.In 1912, German scientist

The War on Terror and It's Effects in Iraq

2450 words - 10 pages There have been hundreds of terrorist acts every year, and the same characteristic in each of the groups or organizations committing these acts, is poverty and usually occupation of their nation by foreign government forces. Since the bombing of the World Trade Centre in New York on Sept. 11, 2001, it appears that no nation can find a concrete or productive way to deal with terrorism, a difficult problem that shows no signs of decreasing or

Terrorism and it's effects on children

1305 words - 5 pages things that went on in those three days and gives a few brief quotes from those who lived through it. Prior research for the effects of terrorism on the ability of children to correctly detect the emotions being expressed facially has indicated that children who have been through a terrorist attack are at a greater chance of developing anxiety, depression, and Post Traumatic Stress Disorder (PTSD) (Scrimin, et al., 2009). It states that

A Report On The Theory Of Evolution

1112 words - 4 pages separate. (For example, the branches of the Barnacles and the Whales.) The genetic similarity between species is a similarity that allows us to begin to understand the effects of our own genes by conducting research on genes from other species.Evidence against the Theory of EvolutionAlthough the Theory of Evolution was commonly acknowledged by scientists, there were still numerous people who did not agree with the Theory. They had various reasons

The Permian-Triassic Extinction Event and It's Effects on Life on Earth

1823 words - 7 pages extinction patterns found in the strata, and that it likely a short extinction event occurred as the result of something like an ecosystem collapse caused by environmental degradation. Conclusion: The effects of the Permian-Triassic extinction event on the diversity of terrestrial vertebrate and invertebrate life certainly lived up to it’s name of the ‘Great Dying’. With the several extinction pulses within the overall event, a massive amount of

The Cold War And Its Effects On Airpower Theory

1863 words - 7 pages The Cold War and Its Effects on Airpower Theory Airpower theory prior to and during World War II relied on maintaining the offensive, developing a long range bomber force, and ensuring institutional independence for a separate air force. The Soviet threat, however, dictated the evolution of airpower theory during the Cold War. Following the delivery of the first atomic weapons at the end of World War II, the United States shifted towards a

A History of Technology and the Inevitable Effects It's Had on How We Do Things

1590 words - 7 pages unlimited. One by one, each app finds a home on a person’s phone allowing them to waste more time. Because of all the accessibility and likeness in cell phones and the online world, people have become addicted. There have been studies that relate an addiction to a phone to hold similar effects as a substance addiction. “ It can significantly impact students' lives. Depending on its severity, technology addiction can be socially devastating; people

Enlightenment and it's effects

3351 words - 13 pages and the progress of economics led us the age of rigid materialism and exaggerated consumption. In other words, Smith slightly ignores the social structures; he is only preoccupied with the theory of economic progress, elimination of restrictions on trade and therefore, augmentation of wealth and yet he omits the discussion of side effects that do arise as a result of this, such as dissatisfaction on a human level. Some of the postmodernists might

Technology and it's effects

1461 words - 6 pages soccer. I have a reliance on technology but not a straightup addiction like the next generation of kids and even some in my own generation. Both the good and bad sides of the effects of a society built around technology have been felt by me and the rest of my generation as a whole. My peers have been a sort of transitional group. I distinctly remember a Game-boy being the coolest thing ever and computers getting installed for the first time in many

Globaliztion and it's effects

1555 words - 6 pages Globalization broadly refers to the expansion of global linkages, the organization of social life on a global scale, and the growth of a global consciousness, hence to the consolidation of world society. Such an ecumenical definition captures much of what the term commonly means, but its meaning is disputed. It encompasses several large processes; definitions differ in what they emphasize. Globalization is historically complex; definitions vary

Similar Essays

Continental Drift: Exploring The Theory Essay

846 words - 3 pages , it is apparent that this is more than a theory, but with science maturing and growing, a soon-to-be fact.Bibliography1) Sharron Sample, On the Move.. Continental Drift and Plate Techtonics. http://kids.earth.nasa.gov/archive/pangaea/. Viewed December 1, 2002.2) Continental Drift and Plate Techtonics. http://www.zephryus.demon.co.uk/geography/resources/earth/tect.html. Viewed December 1, 2002.3) Continental Drift. http://www.oceansonline.com/continen.htm. Viewed December 1, 2002.Continental Drift. http://www.doc.mmu.ac.uk/aric/eae/Climate_Change/Older/Continental_Drift.html. Viewed December 1, 2002.

Continental Drift Theory Essay

661 words - 3 pages Alfred Wegener gave many facts that help prove his Continental Drift theory. Wegener’s supporting facts include fossil evidence, land features, climate evidence, and sea floor spreading. In the beginning of Wegener’s research to prove his Continental Drift theory, he found clues from fossil evidence from millions of years ago. Different animals, such as the Cynognathus, Lystrasaurus, and Mesosaurus gave proof that the continents have moved

Essay On The Evidence That Supports The Theory Of Continental Drift And Plate Tectonics

783 words - 3 pages The initial theory of continental drift was put forward by a German meteorologist Alfred Wegener in 1915. This theory did not seem credible until it was connected with the plate tectonic theory in the mid 1960's. The Tectonic plate theory had an advantage over previous predictions as it could be supported by observed occurrences. One such thing that supports these two theories is that seen from space the continents look as if they might once

Alfred Wegener And The Continental Drift

855 words - 4 pages he published his theory. Continental Drift Theory The subject of the new book, which was published in five languages other than German, was on the origins of continents and oceans. In this book Wegener noted that there was no specific field to look at that would have caused the continental drift. Instead he noted that all fields needed to be studied for the answer. Wegener’s theory was met with much controversy by other scientists. The fact