Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Answers to practical questions about plant growth are sought with increasing urgency. Climate change is affecting the stability of vegetation, the yield of many important crops, and there is a continual need for ever more productive varieties to feed a growing global population. Answering questions posed by these problems requires a more integrated understanding of how plants function in producing growth. This book shows how this understanding can be achieved. First and foremost, plant growth must be defined as a dynamic system with developmental, morphological, and physiological processes responding to fluctuations in the environment due to weather, changes in the architecture of the plant as it grows, and the effects of plants on their environment: connecting these processes in a complete system is the essential integration. Part I shows, for contrasting plant types, that developmental, morphological, and physiological processes must all be considered to explain differences in growth and survival; Part II defines the types of control processes occurring in plants and their different functions; Part III illustrates the importance of plant morphology in controlling growth; Part IV how, and to what extent, the effects of environmental factors are controlled by plant processes particularly as plants grow in size. A final chapter defines how a theory for growth of a particular plant must be based on its characteristics as a dynamic system.

This Very Short Introduction provides both the believer and non-believer with a balanced survey of the central questions of theology. David Ford's approach draws us in to considering the principles underlying religious belief, including the centrality of salvation to most major religions, the concept of God in ancient, modern, and postmodern contexts, the challenge posed to theology by prayer and worship, and the issue of sin and evil. He also probes the nature of experience, knowledge, and wisdom in theology, and discusses what is involved in interpreting theological texts. In this new edition, Ford considers the contemporary relevance of theology, including the effect of globalization and digitized communication, examines the theological responses to change and development in science, considers the impact of increased engagement between Islam and the West, and looks at the development and importance of theology between the different faiths. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.

What good is a rattlesnake? What purpose do animals serve? All species play a vital role in their biological communities, and the removal of just one can have a noticeable and catastrophic ripple effect. Yet social and political pressures frequently pit species conservation against economic progress and prosperity, and scientists fear that we may be in the midst of a mass extinction event. Brian R. Chapman and William I. Lutterschmidt make the case that the effort to preserve animals is the responsibility of every Texan and that biodiversity contributes enormous economic value to the citizens of Texas. Texans on the Brink brings together experts on eighty-eight endangered and threatened animal species of Texas and includes brief descriptions of the processes that state and federal agencies employ to list and protect designated species. Species accounts include a description of the species accompanied by a photograph, an easy-to-read account of the biology and ecology of the species, and a description of efforts underway to preserve the species and its required habitat. Sobering examples of species that were once part of the Texas fauna but are now extinct or extirpated are also given to further demonstrate just how vulnerable biodiversity can be. All species require healthy habitats, and every species-even a rattlesnake-provides important services for the biotic communities in which they live. It is imperative to learn as much as we can about these animals if we are to preserve biodiversity successfully in Texas.