Gradually, if the player monitors the species' progress and moves them to more appropriate habitats and climate zones, the selected species will feed, breed, and prosper. From that secure population who can then evolve more advanced and adaptable creatures, along with continental drift and climate change, the other, older, and more primitive species will be rendered obsolete, and their creatures will die out.
Gradually, if the player observes the species' development and relocates them to more suitable environments and temperature zones, the chosen species will feed, reproduce, and flourish. From that stable population, who can then evolve more sophisticated and flexible creatures, along with continental movement and climate shift, the other, older, and less advanced species will become extinct, and their offspring will disappear.