You can't. If a species is extinct, that means that no organism in that species is alive. It is gone forever.
Extinct species are gone. There are no members left alive. Therefore, there is nothing one can do for them.
So the species does not become extinct.
Stop killing them
Each species is apart of a greater relationship which sustains the current life on Earth. If a species goes extinct, the ecosystem will be affected. This can have bad repercussions to humanity.
It is easier and quicker to save a species when it is at risk of being extinct. Speciation takes too long; therefore humans should do everything within their power to save animals.
Because it is an endangered species, and if we do not save it, it will die out, or become extinct, much like the Dodo.
We can do various things to save planet earth from dying. Plant trees is the most viable.
be more specific about this "planet". We should save Earth because if we don't, the Earth will be messed up and we'll all die. ;( ;(
Not if they are truly extinct. Some species which had been thought to be extinct have occasionally been found to still have a few survivors in remote places, but never enough to save them from extinction.
Extinct is already dead and Endangered is there is less of them left in the world meaning we should try to save them !!
possibly DNA duplication and genetic research to find the genetic code of the extinct species to possibly revive them
The same reason you should save every other species from going extinct; once it's gone, it isn't coming back.