Continental drift and evolution Video
How Earth Will Look In 250 million Years continental drift and evolutionContinental drift and evolution - what words
Third largest: Johan Sverdrup is the third largest oil field on the Norwegian continental shelf, with expected resources of 2. In German meteorologist Alfred Wegener, impressed by the similarity of the geography of the Atlantic coastlines, explicitly presented the concept of continental drift. Accordingly, they are narrow, rough, and steep off mountainous coasts but broad and comparatively level offshore from plains. The continental shelf, slope, and rise are collectively called the continental margin. The Atlantic continental shelves, on the other hand, show little or no tectonic deformation and bear a thick veneer of sedimentary material. When sea level is lowered on a trailing-edge shelf that has no adjacent high mountains, such as the Atlantic coast of North America, rivers are rejuvenated. This could be explained either by the migration of the magnetic pole itself that is, polar wandering or by the migration of Europe relative to a fixed pole that is, continental drift. This concept was an important precursor to the development of the theory of plate tectonics, which incorporates it. Continental shelf, a broad, relatively shallow submarine terrace of continental crust forming the edge of a continental landmass.
The Earth is estimated to be about 4. There is no doubt that in that very large amount of time, the Earth has undergone some drastic changes.
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This means that life on Earth has had to accumulate adaptations as well in order to survive. These physical changes to Earth can drive evolution as the species that are on https://digitales.com.au/blog/wp-content/custom/general-motors-and-the-affecting-factors-of/beautiful-mind-nash.php planet change as the planet itself changes. The changes on Earth can come from internal or external sources and are continuing to this day. It may feel like the ground that we stand on every day is stationary and solid, but that is not the case. The continents on Earth are divided up into large "plates" that move and float on the liquid-like rock that makes up the mantle of continental drift and evolution Earth.
These plates continental drift and evolution like rafts that move as the convection currents in the mantle move below them. The idea that these plates move is called plate tectonics and the actual movement of the plates can be measured. Some plates move faster than others, but all are moving, albeit at a continentap slow rate of only a few centimeters, on average, per year. This movement leads to what scientists call "continental drift".
The actual continents move apart and come back together depending on which way the plates on which they are attached are moving. The continents have been all one big landmass at least twice in the history of the Earth. These supercontinents were called Rodinia and Pangaea. Eventually, the continents will come back together again at some point in the future to create a new supercontinent which is currently dubbed "Pangaea Ultima".
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How does continental evplution affect evolution? As continents broke apart from Pangaea, species got separated by seas and oceans and speciation occurred. Individuals that were once able to interbreed were reproductively isolated from one another and eventually acquired adaptations that made them incompatible. This drove evolution by creating new species.
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Also, as the continents drift, they move into new climates. What was once at the equator may now be near the poles.
If species did not adapt to these changes in the weather and temperature, then they would not survive and go extinct. New contnental would take their place and learn to survive in the new areas. While individual continents and their species had to adapt to new climates as they drifted, they also faced a different type of climate change. The Earth has periodically shifted between very cold ice ages across the planet, to extremely hot conditions. These changes are due to various things such as slight changes to our orbit around the sun, changes in ocean currents, and the build-up of greenhouse gases such as carbon dioxide, among other internal sources. No continental drift and evolution the cause, these sudden, or gradual, climate changes force species to adapt and evolve.
Periods of an extreme cold usually result in glaciation, which reduces the sea levels. Anything that lives in an aquatic biome would be affected by this type of climate change. Likewise, rapidly increasing temperatures melt ice caps and raise the sea levels.]
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