Unification- the process of being united or made into a whole.
I don't understand what you want me to say
Adults choose their ecological niche by selecting neighborhoods, mates, hobbies, and careers at least in part based on their personality traits. <span>An </span>ecological niche<span> is the role and position a species has in its environment; how it meets its needs for food and shelter, how it survives, and how it reproduces</span>