form function birds (41 Ergebnisse)

Zustand: very good. Gut/Very good: Buch bzw. Schutzumschlag mit wenigen Gebrauchsspuren an Einband, Schutzumschlag oder Seiten. / Describes a book or dust jacket that does show some signs of wear on either the binding, dust jacket or pages.

Zustand: New. 2020. Illustrated. Paperback. . . . . . Books ship from the US and Ireland.

Paperback. Zustand: Brand New. 224 pages. 8.25x5.75x0.75 inches. In Stock.

Paperback. Zustand: Very Good. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged.

Zustand: Good. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Zustand: Good. Former library copy. Pages intact with minimal writing/highlighting. The binding may be loose and creased. Dust jackets/supplements are not included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good.

Taschenbuch. Zustand: Neu. Neuware - How Birds Work goes beyond the typical field guide to show us not only what birds look like but why. Why do many owls have asymmetrical ear openings (Hint: It helps them pinpoint prey; see page 40.) And why does the Grey Heron rest on one leg at a time (Hint: Not because it's tired; see page 66!) Birds boast a spectacular array of adaptations suited to their incredibly diverse diets and habitats. In this in-depth handbook, discover the ways they're even more astounding than you know-inside and out. Detailed analysis and illustrations illuminate:- Skeleton- Muscles- Circulation- Digestion- Respiration- Reproduction- Feathers- Colors and Patterns- And much, much more!

Zustand: Very Good. Very Good condition. (birds, anatomy, physiology ) A copy that may have a few cosmetic defects. May also contain light spine creasing or a few markings such as an owner's name, short gifter's inscription or light stamp.

Zustand: Fair. Acceptable condition. No Dust Jacket Former Library book. Volume 2. A readable, intact copy that may have noticeable tears and wear to the spine. All pages of text are present, but they may include extensive notes and highlighting or be heavily stained. Includes reading copy only books.

Quarto,608 pp.,colour illustrations, fine copy in dustwrapper. A companion to the North American Bird Guide. Divided into two parts - part one "The world of birds" has chapters on flight, form and function; origins, evolution, and classification; behaviour; habitats and distributions; and populations and conservation. Part two contains detailed chapters on the 80 North American bird families.

Hardbound. Zustand: As New. New. Contents 1. Vedic rituals and dramatic singing. 2. Musical practices in Sanskrit drama. 3. Functions of classical ragas in drama. 4. Music in traditional Indian theatres. 5. The raasleela of Braj. 6. Use of music by western dramatists and directors. 7. Music in Asian theatre. 8. Use of music by Indian directors and playwrights. 9. The summing up. Music is the culmination of every art form an integral part of the total dramatic world of India an essential element of the traditional theatre forms that use music vocal and instrumental chants various percussion rhythms sounds and speech patterns with definite dramatic function. Bharat Muni in Natyashastra in his advice to the theatre practitioners says one should first of all bestow care on songs for songs have been called the bed (base) of drama. The song and the playing of musical instruments being well executed the performance of the drama does not encounter any risk. This book is first of its kind a study of the dramatic usage of music folk classical and various modern permutations. It provides vital information about the importance of music and its functions from the ancient stage to the contemporary directors writers and actors. Music creates vast possibilities in creative delineations playwrites like Garcia Lorca and Bertolt Brecht evolved new theatrical forms through the means of music. The modern actor has captured the ineffable emotional nuances in the sounds music of the rain drops of birds and thunder have inspired the actorsclassical melodies create different moods and atmospheres convey time and season. 200 pp.

Zustand: Very Good. 420, numerous col illus, maps. . HB. Vg in d/w. The Encyclopedia of Birds is the definitive single-volume guide to the birds of the world. Written by a team of renowned biologists and conservationists, it offers accessible coverage of every family - their form and function, distribution, diet, social behaviour, and breeding biology - giving special attention to environmental and conservation issues.The Encyclopedia's clear, readable text is supplemented by a wealth of photographs showing the wide diversity of birds in their natural habitat, as well as beautifully detailed illustrations depicting representative species in each family. In addition 'Factfile' panels throughout the book, with distribution maps and scale drawings, put key data at the reader's fingertips, ensuring that this comprehensive reference work will appeal to amateur birdwatchers and student and professionalornithologists alike. [9780747202776].

Couverture rigide. Zustand: Bon. Texte en anglais / text in english ! Sommaire photographié : prenez le temps de le lire ! IX + 905 p. Amarcord. Thermal Adaptation In Biological Membranes: Is Homeoviscous Adaptation The Explanation? Proteins And Temperature. The Evolution Of Endothermy In Mammals And Birds: From Physiology To Fossils. Leukocyte Traffic In The Lung. Regulation Of Pulmonary Vascular Tone In The Perinatal Period. Extracellular Metabolism Of Pulmonary Surfactant: The Role Of A New Serine Protease. Chemical Regulation Of Pulmonary Airway Tone. Endothelium As An Endocrine Organ. Regulation Of Glucose Fluxes During Exercise In The Postabsorptive State. Inhibin, Activin And The Female Reproductive Axis. The Role Of Reactive Oxygen Metabolites In Glomerular Disease. Progression Of Renal Disease And Renal Hypertrophy. Transforming Growth Factor-b And Angiotensin Ii: The Missing Link From Glomerular Hyperfiltration To Glomerulosclerosis? Role Of Platelet-Derived Growth Factor In Renal Injury. Physiologic Mechanisms Of Postischemic Tissue Injury. Mechanosensitive Channels. Molecular Pathology Of The Skeletal Muscle Sodium Channel. The Cftr Chloride Channel Of Mammalian Heart. The Multifunctional Calcium/Calmodulin-Dependent Protein Kinase: From Form To Function. The 5-Ht3 Receptor Channel. Mechanisms Of Activation Of Muscle Nicotinic Acetylcholine Receptors And The Time Course Of Endplate Currents. Mechanisms Of Activation Of Glutamate Receptors And The Time Course Of Excitatory Synaptic Currents. Physiological Diversity Of Nicotinic Acetylcholine Receptors Expressed By Vertebrate Neurons. In Defense Of The Oral Cavity: Structure, Biosynthesis, And Function Of Salivary Mucins. The Hydrophobic Barrier Properties Of Gastrointestinal Mucus. Signal Transduction Packaging And Secretion Of Mucins. Epithelial Mucin Genes. Mucin Biophysics. Nitric Oxide As A Neurotransmitter In Peripheral Nerves: Nature Of Transmitter And Mechanism Of Transmission. Nitric Oxide Signaling In The Central Nervous System. Nitric Oxide Synthases: Properties And Catalytic Mechanism. Nitric Oxide: Pathophysiological Mechanisms. Nitric Oxide In The Regulation Of Blood Flow And Arterial Pressure. Cell Biology Of Atherosclerosis. Angiotensin-Converting Enzyme Inhibition And Ventricular Remodeling After Myocardial Infarction. Traffic Signals On Endothelium For Lymphocyte Recirculation And Leukocyte Emigration. 16x23 cm. 905 p. Reliure éditeur. Bon état. Papier légèrement bruni. Nom de l'ancien propriétaire en page de titre (cachet). Fort in-8°.

Hardcover. Zustand: New. Language: English. ABOUT THE BOOK:- This book explores the history of documenting the fauna found on the Tamil coast and classifying them properly by the Europeans. The curiosity of the unfamiliar and the fascination of the exotic had led them to engage in the studies. The volume provides why a flood of information reached the Atlantic world and how the ideas transmitted served were an important force in the creation of knowledge. The author exhibits a wonderful picture of the insects, reptiles, snakes and he links the study of natural history with medicine explaining the poisonous bites and treatment. He then charts the development of the intellectual culture and experiences into a system of knowledge making on birds, animals and fish that emerged with interest in the academic societies of Europe. The archival and museum dexterity is on full display in the book with the scholars, company servants and practitioners in Germany , England, France, Denmark and Sweden and their projects which explored the natural world reframing the natural history. The work contains refreshingly new information on early modern natural history collection and includes several arresting illustrations thereby providing an innovative framework for understanding the formation of scientific practices and knowledge in Euro- Tamil relations. It analyzes the production of knowledge and focuses on recovering the role of people with multiple centres of knowledge production and exchange. ABOUT THE AUTHOR:- S. Jeyaseela Stephen is Directeur , Institut pourétudes Indo Européennes. He was Professor of Maritime History (2001-2013) at Visva Bharati University , Santiniketan. He is the author numerous books on maritime history of early modern India including 'Oceanscapes: Tamil Textiles in the Early Modern World' (2014), 'A Meeting of the Minds: European and Tamil Encounters in Modern Sciences, 1507-1857' (2016), 'Pondicherry under the French: Illuminating the Urban Landscape' (2018), 'Towns of the Tamil Coast and Hinterland: The Changing Form and Function, 1506-1801' (2019), 'Goodbye to Tamil Motherland: The Rise of Labour Migration Overseas and the Society', 1729-1890' (2019). He received the best book prize of the year 1999 from the Government of Tamilnadu. His books have been translated into Chinese and Tamil. CONTENTS:- Illustrations . 7 Acknowledgements . 13 Abbreviations . 15 1. Introduction . 17 2. Animal Commodities and Europeans . 35 3. The Amazing Animals of Tamil Coast and Zoology, 1639-1857 . 57 4. Strange and Wonderful . 97 5. Exploring the Exotic . 115 6. In to the Sky of Tamil Landscape . 139 7. Ophiology and Toxicology through Experience and Learning, 1701-1853 . 181 8. Ichthyology and Aqua-Fauna . 205 9. Conclusion . 253 Appendices . 265 Bibliography . 277 Index . 301 The Title 'Natural History Knowledge, Tamil Coast and the Atlantic within Reach: Circulation and Construction, 1639-1857 written/authored/edited by S. Jeyaseela Stephen', published in the year 2019. The ISBN 9789353240608 is assigned to the Hardcover version of this title. This book has total of pp. 308 (Pages). The publisher of this title is Kalpaz Publications. This Book is in English. The subject of this book is History / India. Size of the book is 14.34 x 22.59 cms Vol: 308.

Hardcover. Zustand: Good. No Jacket. Over 370 illustrations mainly photos (illustrator). This is a used book that was exposed to water along the bottom edge; the front board has discoloration at the bottom extending up about 2". The title section of pages shows weakness at the bottom 3" and the front end paper has been repaired (taped with library tape to the inside of the front cover). the green cloth along the rear gutter has about a 3" break in it.

Zustand: Very Good. first edition; xi, 496 pp., color frontis.; original gilt & blind stamped green cloth (hardcover), spine slightly frayed, else very good. - If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country.

Taschenbuch. Zustand: Neu. Neuware - In this fascinating book, William Beebe explores the intricate and beautiful world of birds. He delves into their behavior, anatomy, habitat, and more, providing a wealth of information about these captivating creatures. With stunning illustrations and insightful observations, The Bird: Its Form and Function is a must-read for bird enthusiasts everywhere.

Zustand: Hervorragend. Zustand: Hervorragend | Seiten: 296 | Sprache: Englisch | Produktart: Bücher | Deep Listening to Nature is an invitation to open our ears to the natural world.Beginning by tuning in to the sounds of creatures around us, Andrew discusses how to identify species by call, interpret their communications and find empathy for their sentience.Part reflection, part nature and travel diary, Andrew asks the question: What does listening reveal about how the living systems of nature function, and why do birds in particular negotiate their interactions in such lyrical and extraordinary ways?He concludes by suggesting we not only listen to learn about nature, but learn from nature. He asks how, in our current environmental crisis, we may mimic what the biosphere has achieved in sustaining life as we move toward an ecological future and in doing so, form a deeper and more personal connection to Country.Andrew encourages us to be still and listen. Extend our senses. Let nature get to know us, and in its own way, to welcome us.The book is accompanied by an online soundtrack with 300 audio recordings, which bring the text to life.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - The book proposes a new Cultural Realism and Virtualism design model for cultural and creative products based on Laozi's philosophy and analysis of symbolism, metaphysics, three-layered culture, reverse-triangular cultural space and Zen aesthetics. It studies peoples that speak Austronesian languages and offers a detailed comparison of their homogeneous and heterogeneous cultures of color, clothing, housing, boats, birds, symbols, dance and ancestry, and provides insights into the cultural features of deconstruction and construction of color, style, form, shape and function, to compose cultural and creative products using complex, variable, fuzzy evaluation; and structural variation and color evaluation methods. It then uses case studies to show that the products created with the new model not only fulfilled their purpose, but also successfully entered the markets. This book helps qualify decision-making processes, improve accuracy of design scheme evaluation and enhance efficiency inproduct development, and as such appeals to those in the cultural and creative industry, researchers, designers and those who are interested in product design.

Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - The book proposes a new Cultural Realism and Virtualism design model for cultural and creative products based on Laozi's philosophy and analysis of symbolism, metaphysics, three-layered culture, reverse-triangular cultural space and Zen aesthetics. It studies peoples that speak Austronesian languages and offers a detailed comparison of their homogeneous and heterogeneous cultures of color, clothing, housing, boats, birds, symbols, dance and ancestry, and provides insights into the cultural features of deconstruction and construction of color, style, form, shape and function, to compose cultural and creative products using complex, variable, fuzzy evaluation; and structural variation and color evaluation methods. It then uses case studies to show that the products created with the new model not only fulfilled their purpose, but also successfully entered the markets. This book helps qualify decision-making processes, improve accuracy of design scheme evaluation and enhance efficiency inproduct development, and as such appeals to those in the cultural and creative industry, researchers, designers and those who are interested in product design.

Buch. Zustand: Neu. Neuware - In this fascinating book, William Beebe explores the intricate and beautiful world of birds. He delves into their behavior, anatomy, habitat, and more, providing a wealth of information about these captivating creatures. With stunning illustrations and insightful observations, The Bird: Its Form and Function is a must-read for bird enthusiasts everywhere.

Buch. Zustand: Neu. Neuware - Naturalist William Beebe explores the biology and behavior of birds in this comprehensive study. Featuring detailed illustrations, the book covers topics such as feathers and wings, migration patterns, and bird song. This volume will appeal to both amateur birdwatchers and professional ornithologists.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - An elegant analysis of how animals work and function. Professor Schmidt-Nielsen's incisive account gives a clear understanding of comparative physiology in relation to body size, form and function, energy supply, and environment. The author is concerned with principles. For example, he explains how difficult it may be to lose heat and water from the respiratory tract. This leads to a consideration of the mechanism of panting as a means of heat loss. The author describes the centuries-old problem of how birds breathe, which now has been solved in his laboratory. He then discusses energy expenditure for swimming, running, and flying, and the effects of activity on heat balance. The ability of mammals to maintain different parts of the body at different temperatures is explained on the basis of counter-current heat exchange; a related mechanism permits the fast-swimming tuna to enjoy some of the advantages of being warm-blooded. The problems raised by being small in size, or large, are considered in detail. It is shown that many physiological variables can be placed on a scale which permits the derivation of non-dimensional numbers to describe the interrelations between different parameters. This interesting and stimulating account was written primarily for students, but since it brings together and synthesizes much new and up-to-date information it will interest all biologists and physiologists.

Taschenbuch. Zustand: Neu. Neuware - The Coloring Book of Armor showcases a remarkable selection of armor in the collection of The Metropolitan Museum of Art, giving artists of all ages the opportunity to explore a wide range of designs from a variety of countries.Initially developed for an eminently practical purpose - to protect the wearer from injury - armor may take the form of body coverings or objects held in the hand. Any material that can serve as a hard shell or cushion was put to use; not just metal, but also bone, leather, and even silk. Armor also fulfilled other functions. When decorated with magical or religious symbols and texts, it could invoke the powerful assistance of outside forces, including gods. Should it fail to deflect harm, it would at least help to save one's soul. When featuring the emblems of a community or a leader, it fostered a sense of belonging. When made of or decorated with precious metals, it denoted rank and resources. Popular motifs included flowers and leaves, birds, winged lions, and geometric patterns. Armor made for horses was effective at evoking the anatomy of mythical beasts such as dragons, thus instilling >There are more than 30 line drawings for coloring, including a dragon-shaped shaffron (horse's head armor) used in tournaments by the future Henry II of France; the highly decorative suit of armor worn by George Clifford, a favorite of Elizabeth I of England; a 17th-century Japanese helmet in the shape of a sea conch; distinctive armor of chain mail and steel plate from the Indian kingdom of Sindh; and a 19th-century Native American shield of buffalo hide. Photographs of all pieces are provided, allowing you to follow the original coloring - or you may decide to create your own dazzling color schemes. The book also features a concise description of each item, highlighting its origin, materials, and function. This delightful introduction to an extraordinary art form will inspire you to learn more about armor and what it can tell us about our ancestors and different traditions and cultures around the world.

Taschenbuch. Zustand: Neu. Neuware - Living amniotes--including all mammals, birds, crocodilians, snakes, and turtles--comprise an extraordinarily varied array of more than 21,000 species. Found in every major habitat on earth, they possess a truly remarkable range of morphological, ecological, and behavioral adaptations. The fossil record of amniotes extends back three hundred million years and reveals much about modern biological diversity of form and function. A collaborative effort of twenty-four researchers, 'Amniote Paleobiology' presents thirteen new and important scientific perspectives on the evolution and biology of this familiar group. It includes new discoveries of dinosaurs and primitive relatives of mammals; studies of mammalian chewing and locomotion; and examinations of the evolutionary process in plesiosaurs, mammals, and dinosaurs. Emphasizing the rich variety of analytical techniques available to vertebrate paleontologists--from traditional description to multivariate morphometrics and complex three-dimensional kinematics--'Amniote Paleobiology' seeks to understand how species are related to each other and what these relationships reveal about changes in anatomy and function over time. A timely synthesis of modern contributions to the field of evolutionary studies,' Amniote Paleobiology' furthers our understanding of this diverse group.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Cooperative breeders are species in which individuals beyond a pair assist in the production of young in a single brood or litter. Although relatively rare, cooperative breeding is widespread taxonomically and continues to pose challenges to our understanding of the evolution of cooperation and altruistic behavior. Bringing together long-term studies of cooperatively breeding birds, mammals, and fish, this volume provides a synthesis of current studies in the field. The chapters are organised by individual studies of particular species or (in the case of mole-rats) two closely related cooperatively breeding species. Each focuses not only on describing behavior and ecology but also on testing evolutionary hypotheses for the form and function of the diverse and extraordinary cooperative breeding lifestyles that have been discovered. This unique and comprehensive text will be of interest to graduate students and researchers of behavioral ecology and the evolution of cooperation.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Birds have and continue to fascinate scientists and the general public. While the avian respiratory system has unremittingly been investigated for nearly five centuries, important aspects on its biology remain cryptic and controversial. In this book, resolving some of the contentious issues, developmental-, structural- and functional aspects of the avian lung-air sac system are particularized: it endeavors to answer following fundamental questions on the biology of birds: how, when and why did birds become what they are Flight is a unique form of locomotion. It considerably shaped the form and the essence of birds as animals. An exceptionally efficient respiratory system capacitated birds to procure the exceptionally large quantities of oxygen needed for powered (active) flight. Among the extant air-breathing vertebrates, comprising ~11,000 species, birds are the most species-rich-, numerically abundant- and extensively distributed animal taxon. After realizing volancy,they easily overcame geographical obstacles and extensively dispersed into various ecological niches where they underwent remarkable adaptive radiation. While the external morphology of birds is inconceivably uniform for such a considerably speciose taxon, contingent on among other attributes, lifestyle, habitat and phylogenetic level of development have foremost determined the novelties that are displayed by diverse species of birds.Here, critical synthesizes of the most recent findings with the historical ones, evolution and behavior and development, structure and function of the exceptionally elaborate respiratory system of birds are detailed. The prominence of modern birds as a taxon in the Animal Kingdom is underscored. The book should appeal to researchers who are interested in evolutionary processes and how adaptive specializations correlate with biological physiognomies and exigencies, comparative biologists who focus on how various animals have solved respiratory pressures, people who study respiration in birds and other animals and ornithologists who love and enjoy birds for what they are - profoundly interesting animals.

Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Birds have and continue to fascinate scientists and the general public. While the avian respiratory system has unremittingly been investigated for nearly five centuries, important aspects on its biology remain cryptic and controversial. In this book, resolving some of the contentious issues, developmental-, structural- and functional aspects of the avian lung-air sac system are particularized: it endeavors to answer following fundamental questions on the biology of birds: how, when and why did birds become what they are Flight is a unique form of locomotion. It considerably shaped the form and the essence of birds as animals. An exceptionally efficient respiratory system capacitated birds to procure the exceptionally large quantities of oxygen needed for powered (active) flight. Among the extant air-breathing vertebrates, comprising ~11,000 species, birds are the most species-rich-, numerically abundant- and extensively distributed animal taxon. After realizing volancy,they easily overcame geographical obstacles and extensively dispersed into various ecological niches where they underwent remarkable adaptive radiation. While the external morphology of birds is inconceivably uniform for such a considerably speciose taxon, contingent on among other attributes, lifestyle, habitat and phylogenetic level of development have foremost determined the novelties that are displayed by diverse species of birds.Here, critical synthesizes of the most recent findings with the historical ones, evolution and behavior and development, structure and function of the exceptionally elaborate respiratory system of birds are detailed. The prominence of modern birds as a taxon in the Animal Kingdom is underscored. The book should appeal to researchers who are interested in evolutionary processes and how adaptive specializations correlate with biological physiognomies and exigencies, comparative biologists who focus on how various animals have solved respiratory pressures, people who study respiration in birds and other animals and ornithologists who love and enjoy birds for what they are - profoundly interesting animals.

Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - This book is a compilation of reviews on important aspect of cardiovascular function in vertebrates, and includes ontogenetic development in several of the major animal groups. While emphasis is placed on vertebrates, McMahon reviews the evolution and design of various invertebrates and demonstrates the many analogies on regulation of the cardiovascular systems between multicellular animals. The stunning morphology of the teleost heart of reviewed by Icardo to provide a link between structure and function, paying special attention to the outflow tract and its further evolution. More functional aspects of cardiac function in fish are covered by Tota and Garofalo, including genetics, adaptive growth and regeneration of the fish heart with emphasis on NO signaling between the endocardium and the myocardium. With outset in the variety in form and function of the piscine heart, Farrell, Farrell, Jourdan and Cox provide a novel synthesis on the co-evolution of cardiac performance and the metabolic requirements of the ventricle. The functional correlates of the increased cardiovascular performance within terrestrial vertebrates, particularly the high blood pressures and heart rates of the endothermic birds and mammals, are dealt with in two subsequent chapters. Gillis reviews the evolution of molecular and cellular functions of contractile proteins of the heart, while Galli and Shiels summarizes current knowledge on the conservation in the basic principles of excitation-contraction coupling, in spite of large intra-specific differences in both structure and function of the sarcoplasmic reticulum.Turning to similar functional questions, Sedmera and Ostadal cover the development of cardiac pumping function, conduction and metabolism in higher vertebrates from both clinical and adaptive perspectives, while Wong, Moorman and Barnett provide an extensive review of the early phases on cardiac development of the four-chambered mammalian heart paying a particular attention to its growth, electrophysiological properties and formation of the conduction system. Finally Hicks and Wang provides a provocative view on age-old question on design and function of the reptilian heart.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Birds and reptiles have long fascinated investigators studying hearing and the auditory system. The highly evolved auditory inner ear of birds and reptiles shares many characteristics with the ear of mammals. Thus, the two groups are essential in understanding the form and function of the vertebrate and mammalian auditory systems. Comparative Hearing: Birds and Reptiles covers the broad range of our knowledge of hearing and acoustic communication in both groups of vertebrates. This volume addresses the many similarities in their auditory systems, as well as the known significant differences about hearing in the two groups.