Mutualism because both animals benefit. The Elephant gets relived from the parasites that are on it and the bird gets food.
Calls Can Get Damaged, OR Age And Die. We Wouldn't Be "Us" If We Didn't Have Cells. Hope That Helps
With regards to gender differences in coping strategies, male is to female as fight or flight is to TEND AND BEFRIEND. Men and women have different strategies in coping with stress; men usually exhibit the fight or flight tendency while women exhibit the tend and befriend tendency.
The carrying capacity of a biological species in an environment is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water, and other necessities available in the environment.