I think one could say all of those things match the changes in habitats themselves, which are constantly evolving changing etc. As for adaptation, if you mean mutations and changes that make something more compatible in its environment, then we're exiting the field of evolution, since there is no purpose for it. Organisms don't change in order to survive better. They simply change, and sometimes, those changes result in an organism that is better able to reproduce and produce viable offspring - or at least not worse at it than organisms without that change.. Adaptation is a anthropomorphized interpretation of a completely non-human-centric phenomenon.