Recent studies have discovered considerable genetic and morphological variation between and within populations of the same species. Yet the relation between this intraspecific variation and the processes of speciation remains poorly understood. When, how, and why do new species arrive?Evolution of Biological Diversity, with a prominent assortment of contributors, is an extensive review of the most recent research into this and other questions of biological diversity and the processes of speciation. Major chapters explore how variation occurs within species by emphasizing the ecological and...
Recent studies have discovered considerable genetic and morphological variation between and within populations of the same species. Yet the relation b...
These enchanting images are ideal for marking your place in any book. Twelve captivating bookmarks depict a host of ethereal fairyland creatures in repose against colorful garden backdrops -- seated on a leafy perch beneath lovely blossoms, climbing an ivy vine, and in other floral settings. Printed on sturdy stock and laminated for durability, these easily detachable, ready-to-use place keepers, presented in a handy book format, will stay clean and wrinkle-free until ready for use.
These enchanting images are ideal for marking your place in any book. Twelve captivating bookmarks depict a host of ethereal fairyland creatures in...
Professionals today wield an enormous public power. Collectively, their decisions affect the patient's plight, the client's fate, the student's future, the city's scape, the Earth's sustainability, the worker's fair treatment, and the durability of institution's great and small. Yet professionals do not perceive themselves as power wielders. They feel beleaguered, marginal, insufficiently appreciated, often under siege. Thus they tend to obscure for themselves their obligation to the common good. This book explores eight professions as they struggle with their double identity--as a means...
Professionals today wield an enormous public power. Collectively, their decisions affect the patient's plight, the client's fate, the student's fut...