organic evolution

The monkey moved Dave Cowan to lecture again upon the mysteries of organic evolution.

And, for those who follow Darwin's lead, mental evolution is still in a measure subservient to organic evolution.

The vague Greek questionings as to organic evolution were world-wide from the precise inductions of a Darwin.

Each superior degree of organic evolution is accompanied by an inferior degree of fecundity.

This question is whether natural selection has been the sole, or but the main, cause of organic evolution.