Final answer:
A change in temperature can allow the survival of a few members of thermophilic archaebacteria in hot springs.
Step-by-step explanation:
A change in the temperature of the water in hot springs can affect the survival of thermophilic archaebacteria. If the temperature of the hot springs gets reduced, a change in temperature can allow the survival of a few members of these archaebacteria. Some archaebacteria species can tolerate lower temperatures, although not as extreme as their preferred high-temperature environments. This adaptation allows them to survive in a broader range of temperatures.