Diversity is the essential, naturally fluid variety of individuals, populations, and communities. Diverse inhabitants arise fluidly as dynamic inclusions of habitat due to the relationship of receptive space and responsive flux. Natural biological diversity is understood as co-evolving inhabitants and habitats or organisms and environments. Individual distinctions are an expression of evolutionary creativity and complementary partnership. Our own human bodies would have very limited capabilities if all the cells within were identical. So, too, would our human communities if all humans were the same.