What would likely happen to a species that did not adapt to a new environment?

A species that does not adapt to a new environment is likely to face extinction. Without the ability to adapt to the changing conditions of their environment, the species will not be able to thrive and reproduce successfully. This can lead to a decline in population size and ultimately the elimination of the species from that particular environment. It is important for species to be able to adapt to new environments in order to survive and continue to evolve over time.