The Keys are designed for easy visual comparison of details which look alike, narrowing the identification of a tree to one of a small group -- the family or genus.Then, in the Master Pages, the species of the tree is determined, with similar details placed together to highlight differences within the family group, thus eliminating all other possibilities. The details of the Oak trees on this plate are an example of the system.All of the more than 1500 photographs were made specifically for use in this book and were taken either in the field or of carefully collected specimens. Where possible, details such as leaves, fruit, etc., appear in actual size, or in the same scale.

    In this revised edition, Merlin D. Tuttle, founder and science director of Bat Conservation International in Austin, Texas, offers bat aficionados the most up-to-date bat facts, including a wealth of new information on attracting bats and building bat houses and a totally revamped key to the identification of common North American species.

    See far-flung worlds, they said. Meet interesting creatures, and kill them all. Soldiers fighting aliens in unforgiving landscapes, where every breath could be their last. Featuring stories by Weston Ochse, Mike Resnick, and others. From near-future to far-future, featuring some of the best writers working in the field today.

    

    Pages from actual field notebooks clearly illustrate what works and why. Hints and advice for outdoorspeople with even limited artistic skills. For nature-lovers, birders, and students of wildlife and biology, keeping a field notebook is essential to accurately recording outdoor observations. This unique guide offers instruction on how to do it--what to look for, what information should be recorded and how to organize it, basic drawing skills using line and color, and incorporating maps and charts, as well as advice on equipment to take in the field and using conventional field guides. A colorful book that will teach and inspire.

    Because of this balance, the Seventh Edition of Microbiology is appropriate for microbiology majors and mixed majors courses. The new authors have focused on readability, artwork, and the integration of several key themes (including evolution, ecology and diversity) throughout the text, making an already superior text even better.

    The calculus is not a hard subject and I prove this through an easy to read and obvious approach spanning only 100 pages. I have written this book with the following type of student in mind; the non-traditional student returning to college after a long break, a notoriously weak student in math who just needs to get past calculus to obtain a degree, and the garage tinkerer who wishes to understand a little more about the technical subjects. This book is meant to address the many fundamental thought-blocks that keep the average 'mathaphobe' (or just an interested person who doesn't have the time to enroll in a course) from excelling in mathematics in a clear and concise manner. It is my sincerest hope that this book helps you with your needs.Show more Show less

    This is because almost 70 percent of Earth's surface is covered with water. Earth is the only planet with liquid water --- and therefore the only planet that can support life. All water is connected. Every raindrop, lake, underground river and glacier is part of a single global well. Water has the power to change everything --- a single splash can sprout a seed, quench a thirst, provide a habitat, generate energy and sustain life. How we treat the water in the well will affect every species on the planet, now and for years to come. One Well shows how every one of us has the power to conserve and protect our global well. One Well is part of CitizenKid: A collection of books that inform children about the world and inspire them to be better global citizens.

    This book bridges the gap between introductory books and source scientific information. Written by a technical diving instructor, it teaches about decompression theory. It offers an understanding of what is happening during decompression dives.

    Packed with nutrients and naturally low in fat, fish is the last animal we can still eat in good conscience. Or can we?In this vivid, eye-opening book—first published in the UK to wide acclaim and now extensively revised for an American audience—environmental journalist Charles Clover argues that our passion for fish is unsustainable. Seventy-five percent of the world’s fish stocks are now fully exploited or overfished; the most popular varieties risk extinction within the next few decades.Clover trawls the globe for answers, from Tokyo’s sumptuous fish market to the heart of New England’s fishing industry. He joins hardy sailors on high-tech boats, interviews top chefs whose menu selections can influence the fate of entire species, and examines the ineffective organizations charged with regulating the world’s fisheries. Along the way he argues that governments as well as consumers can take steps to reverse this disturbing trend before it’s too late. The price of a mouthwatering fillet of Chilean sea bass may seem outrageous, but The End of the Line shows its real cost to the ecosystem is far greater.

    Simple, rhythmic wording builds to a crescendo ("This is the mess that we made. These are the fish that swim in the mess that we made.") and the vibrant digital artwork captures the disaster that is the Great Pacific Garbage Patch. Children can imagine themselves as one of the four multi-ethnic occupants of the little boat surrounded by swirling plastic in the middle of the ocean, witnessing the cycle of destruction and the harm it causes to plants, animals, and humans. The first half of the book portrays the growing magnitude of the issue, and the second half rallies children and adults to make the necessary changes to save our oceans. Facts about the Great Pacific Garbage Patch, ocean pollution, and how kids can help are included in the back matter.

    

    A bold foray into the heart of the American West’s final frontier, the expedition was achieved without benefit of modern river-running equipment, supplies, or a firm sense of the region’s perilous topography and the attitudes of the native inhabitants towards whites.For more than seventy years, Penguin has been the leading publisher of classic literature in the English-speaking world. With more than 1,700 titles, Penguin Classics represents a global bookshelf of the best works throughout history and across genres and disciplines. Readers trust the series to provide authoritative texts enhanced by introductions and notes by distinguished scholars and contemporary authors, as well as up-to-date translations by award-winning translators.

    With extensive treatment of the heart of epidemiology-from study designs to descriptive epidemiology to quantitative measures-this reader-friendly text is accessible and interesting to a wide range of beginning students in all health-related disciplines. A unique focus is given to real-world applications of epidemiology and the development of skills that students can apply in subsequent course work and in the field. The text is also accompanied by a complete package of instructor and student resources available through a companion Web site.

    This text provides the theory you need with the practice you want. With its exciting integration of the Harley-Davidson company theme, this text continues to provide a solid, enduring foundation of the tools of modern theory in practice while at the same time developing the logic behind their use. This text uses 10 Principles of Finance as a unifying framework to tie the major concepts of the book together.