Contents: Part 1 The foundations of life,Biology:the science of life,The nature of living matter,Metabolism,The cell: unit of living matter,Part 2 The organization and classification of animals,The classification of animals,Organization of animals,Protozoa,The diploblastic phyla,The worms,Animals of uncertain relationship,Phylum echinodermata,Phylum mollusca,Phylum arthropoda,Phylum chordata,Part 3 The maintenance of the individual,The animal and its physical environment,The interchange of materials,The interchange of materials,The interchange of materials,The internal environment,Communication and government,Growth and repair,The relations of animals,Part 4 Reproduction,The development of the individual,Heredity,Part 5 Problems of origin,The origin of living things,The process of evolution,Part 6 Biology and human life,Man and his origin,Man's environment,Biological problems of society,The future,Bibliography,Index
