Extinction occurs when the environment
changes and
(1) a species can reproduce successfully
(2) an individual has adaptive characteristics
insufficient to allow survival
(3) all members of a species are no longer living
(4) one individual produces some offspring that
evolve into a new species



Answer :

3. all members of a species are no longer living
EXTINCTION is the process of decline in population in a society, community or ecosystems 
(3) all members of a species are no longer living

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