Parental investment in chimps is not only important socially, but key to their survival.
The مزید and مزید I learn in my link class, the مزید convinced I am that the theory of evolution at least holds some water.
I've mentioned this class before, and it's a subject I always have to define (and redefine as they often forget) whenever I bring it up with my دوستوں and family. In essence, we study prosimians, apes and monkeys, their behavior, and how we as humans are similar and different from them. The big picture, though, as the link will tell you, is examining how biology influences how humans behave and interact.
Those who accept the theory of evolution as plausible understand that...