This comprehensive study of physical geography uses a modern approach which establishes the links between process, form and effect. It considers explicitly the role of humanity in influencing the physical environment and the ways in which we, in turn, are affected by it. Hence the authors explore the natural world as a series of systems (without labouring the conceptual aspects of systems analysis), and consider the relationship between the different components of the earth. The book is divided into four sections: the atmospheric system, the hydrological system, the landscape system and the ecosystem. In each case an introductory chapter outlines in simple terms the main components to be discussed and the nature of the flows of energy and matter which link them. The substantive chapters in each section then look at the processes and forms of each system.