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Mass extinction
Meaning
Noun
●
In Evolutionary theory & Geology:
A
sharp
decrease
in the total number of
species
in a
relatively
short
period of time
;
specifically
, a
loss
of ∼75%
of all
species
on the
planet
over a
geologically
interval
of
less than
3
million
years,
as a result of
a
mass extinction
event.
Sourced from
Wiktionary
Synonyms
Extinction Event
Mass Extinction Event
Extinction Level Event
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