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Mass extinction Definition and Explanation PDF | Download eBooks

Learn Mass extinction definition in biology with explanation to study “What is Mass extinction”. Study mass extinction explanation with biology terms to review biology course for online degree programs.

Mass extinction Definition:

  • Mass extinction is a phenomenon in which large numbers of species become extinct worldwide.

    Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson

Mass extinction Explanation:

Mass extinction is a widespread and rapid decrease in the biodiversity on Earth. Such an event is identified by a sharp change in the diversity and abundance of multicellular organisms. It occurs when the rate of extinction increases with respect to the rate of speciation. Estimates of the number of major mass extinctions in the last 540 million years range from as few as five to more than twenty. One of the mass extinctions wiped out the dinosaurs from earth.

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