This teacher's guide is designed to give background information on current biological subjects not usually treated in student texts. The book is divided into five parts, each representing one of the following topics: (1) evolution of human populations; (2) environment of human populations; (3) dynamics of human populations; (4) reproduction in human populations; and (5) present and future evolution or design for survival. The information contained in the book is directed towards secondary teachers in Africa. A section containing suggestions for using the book and a basic discussion on the concepts and principles of ecology is included. A bibliography of books for further reading concludes the book. (MA)