Evolution can have three results. In one, a species can be successfully in all changes in the environment, undergoing very few changes. In this case, the species will exist for a long time. In a second case, a species can natural selection can induce speciation, changing a older species into a new species. In the third case, a species could find that it does not have traits within its genepool to survive changes in the environment. In this last case, in the face of disruptive selection, and a sudden shift in the environment such as a loss of habitat, a species may not been able to live long enough to reproduce. If this happens, then the species will become extinct, will die and be loss from Earth's future forever.