The Galapagus and Darwin's Finshes

The research started in 19 73, when er, we were both 35 years old. I had three basic questions in my mind. One was, how do species form? That's a question that i ar had as a graduate student and carried on with afterwards. The second question was, to what extent is competition for resources, principally food, an important factor in determining which species can coexist with which,. And the third question was, why are somepop ations in morphology, that means body size and proportions,Why are some populations so much more variable than others? Er knew ahead of time, as a result of a monograph from don david lack in 19 forty five, that dar