Extinction: Difference between revisions

Extinction (edit)

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 Today the overwhelming cause of extinctions is human beings and the changes made to the landscape for [[agriculture]] and [[forestry]].  While there are some oceanic extinctions due to [[fishery]], most fresh water extinctions are due to [[erosion]] and [[dam]]s.
-Biologists call today the '''Sixth Great Dieoff''' as it is the sixth time in nkown geological history that a vast number of species died or are expected to.  [[Climate change]] alone is expected to reduce Earth's [[biodiversity]] very drastically, as most of that diversity is in sensitive river and coast regions.
+Biologists call today the '''Sixth Great Dieoff''' as it is the sixth time in known geological history that a vast number of species died or are expected to.  [[Climate change]] alone is expected to reduce Earth's [[biodiversity]] very drastically, as most of that diversity is in sensitive river and coast regions.
 [[Ape extinction]] is a particular moral problem for humans because these are our own near relatives.  If we let them die off we clearly lack empathy and even the ability to care for those more rather than less like us.  Accordingly many people believe that an ape extinction signals a more general [[human dieoff]], as people in general abandon the idea of humans ever becoming caring about other species, and an "every man for himself" attitude begins to develop.