Outline the mechanism of natural selection as a possible driving force so speciation & state that isolation can lead to different species being produced that are unable to interbreed to yield fertile offspring.
Discuss current estimates of numbers of species and past and present rates of species extinction. Also, describe and explain the factors that may make species more or less prone to extinction.
State and explain the criteria used to determine a species conservation status.
Describe the case histories of three species: one that has become extince, another that is currently endangered, and a third that was endangered and has now been removed from the endangered list.
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