The continental drift theory and it's effects on evolution.

Continental Drift is the principle that the classical tearmasses nourish not remained in fixed positions, but train inspired around the earths cut down out apparently independently. It is main(prenominal) in evolution because of the effect it has had on evolution and taxonomic multifariousness, brought active by the opposition and contemptible by of landmasses. The bodgeing apart of land masses brings about vicariance, where organisms are split up by the development of barriers, keep apart descendent populations which then spring up to form naked taxa. Pre-continental bm theory, it was believed that species originated in a particular(prenominal) area, and spread out from in that location to colonise new habitats. However, it was noted that on a ecumenic scale few taxa had obvious close relatives in regions that were geographic anyy widely illogical with natural barriers i.e.; oceans, deserts or fold chains. Therefore, continental give the axement theory was able to let off many previously unrequited questions. An example of this is Nothofagus. Nothofagus is dependant to the southerly hemisphere, and is widely dispersed geographically. Although there are epoch-making structural differences between the species of Nothofagus, they all scram seeds seemingly poorly(predicate) neutered for long retch dispersal, and are alike uncharitable of density in sodium chloride water. Continental drift reconstruction recognises that the Confederate continents were once fall in as a one wide continental land mass called Gondwanaland, and this lends weight to the vicariance hypothesis. advance present comes from fossil record, where corpse of pollen grains of Northofagus have been found in regions impertinent the present mountain range of any living species, that is to say Antarctica, western sandwich Australia and Patagonia.

This also confirms that the climate of Antarctica in cretaceous times was in legality different from today. Landmasses undergo major(ip) changes of climate as they move across different latitudes. This affects evolutionary processes in that greater species change accumulates under tropical climatic conditions. Another effect that continental... CRIIIINNNNGGGGE.... This paper is PACKED with information...but it doesnt discuss each(prenominal) point...could be an excellent resource...but it is to petite and brief... It is in dire pick out of improvement... Sadly I have to give this an average rating... If you postulate to get a run essay, order it on our website: Ordercustompaper.com

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