Organisms that can adapt to changes in their environment are most likely to survive and reproduce, while those that cannot adapt die out. This idea is known as:
Natural selection seems to be a mechanism that persists and reproduces populations of organisms that seem to be better suited to applications, however those that are somewhat properly equipped die away.
This demonstrates that organisms that really can respond to a given climate can rise in quantities and therefore will ultimately outperform certain species that are unable to respond significantly.