Final answer:
Group behavior can have both positive and negative impacts on the survival and reproduction of individuals and species. It can increase the chances of survival through protection in a larger group, but also decrease the chances through increased competition or reduced mating opportunities.
Step-by-step explanation:
In group behavior, the impact on the survival and reproduction of individuals and species can vary depending on the species and specific behaviors involved. Group behavior can have a positive impact, increasing the chances of survival and reproduction, or a negative impact, decreasing the chances. For example, being part of a larger group can provide protection from predators, increasing the chances of survival. However, increased competition for resources or reduced mating opportunities can decrease the chances of survival and reproduction.