Extinction

EXTINCTION
Local Extinction
extirpation is the condition of a
species (or other taxon) that ceases
to exist in the chosen geographic
area of study, though it still exists
elsewhere.
Background Extinction
also known as the normal extinction rate,
refers to the standard rate of extinction in earth’s geological and biological history.
Speciation
is how a new kind of plant or animal species is created. Speciation occurs when a group within
a species separates from other members of its species and develops its own unique
characteristics.
Endangered Species
any species that is at risk of extinction because of a sudden rapid decrease in its population or a
loss of its critical habitat.
Threatened Species
a plant or animal species generally perceived as likely, in the near future, to become
endangered within all or much of its range
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