This is the new edition of the highly successful textbook, Biological Science, a comprehensive and internationally established text for advanced students, including those following undergraduate courses. The text has been revised and updated, and provides comprehensive coverage in all the major areas of teh biological sciences. New material has been added in the following fast-moving areas: human health and disease, microbiology and biotechnology, and the applications of genetics. Thought-provoking questions permeate the text to stimulate an enquiry based approach to the subject, with answers in a commentary at the end of the book. In addition anumber of useful appendices are included covering biological chemistry, biological techniques and statistics. All the essential laboratory work required at this level is included in the form of selected and clearly presented practical investigations.