Adaptation To and Adaptation Of

In its usual usage, 'adaptation' connotes an extrinsic, unilateral, completed relation between an organism and an environment, as a means to its survival therein, e. g. 'Some marine organisms adapt to land by developing lungs in order to survive there'.  However, that usage involves three oversimplifications.  First, an Organism is constantly in interaction with some Environment, so, what is extrinsic to it is only a specific environment, e. g. water, land, etc., not an Environment per se.  Thus, second, Adaptation with a specific environment, but not per se, is ever completed.  Third, Adaptation can be either to or of an Environment, often simultaneously, e. g. oxygen inhaled by lungs adapted to the atmosphere is incorporated into an organism, and, hence, is a bilateral relation.  Now, Adaptation is not a fixed process, i. e. the quantity of adapted content is not fixed.  The significant example of that is the increase over the course of Human history, of its adaptation of its environment, i. e. its continuing development of the Earth.  Thus, because that adaptation is neither complete nor quantatively unchanging, its principle is not mere Survival, but Evolutionist, i. e. increase in complexity.