When there is ABSOLUTOLY NONE left of that organism then it is extict meaning it will NEVER come back!
It depends on the organism.
It is an extinct organism.
If an organism becomes extinct, the food web collapses. Every organism is needed for it to function properly.
the organism has to reproduce otherwise the species will go extinct.
it depends on what organism
for something to be come pletle extinct.
A species which no longer exists on planet earth because they all died for some reason or another. The dodo is an extinct organism.
The genus and species of a living or an extinct organism is the category that an organism is classified in. This also gives organisms specific names used for binomial nomenclature.
We call such past organism "extinct".
That is, the last individual in the population dies, and the organism is gone forever.
The word "extinct" is an absolute modifier; it does not come in varying degrees. An organism is either extinct or it isn't. One thing cannot be more extinct than another.
You can't. If a species is extinct, that means that no organism in that species is alive. It is gone forever.