mass extinction love

mass extinction


from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun The extinction of a large number of species within a relatively short period of time, as between the Cretaceous and Tertiary Periods when three-quarters of all species on earth, including most dinosaurs, became extinct.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun biology A sharp decrease in the total number of species in a relatively short period of time.


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