A modern mass extinction

March 5, 2007 rposas

 According to Daniel Simberloff a professor of environmental studies and director of the Institute for Biological Invasions at the University of Tennessee,  and other biologial scientist we are approaching the sixth mass extinction. Extinction rates currently are comparable to those of past great extinctions. Simberloff gives an example of the extinction of 128 species of birds that have become extinct in the last 500 years and that 500 bird species will become extinct within this century. It is mainly because of habitat destruction that endangerment and extinction is occuring. Another cause of the extinction is also due to introduced species.  

For more information:

http://www.pbs.org/wgbh/evolution/extinction/massext/statement_03.html

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