With plenty of engaging material, practice questions, and practical ideas, this updated edition contains everything your students need to succeed in Cambridge IGCSE biology.

    But they are relative newcomers there. They evolved in North America and retain their greatest diversity in South America, while the only wild dromedaries are in Australia.This is a classic example of the contradictions of 'native' and 'invasive' species, a hot issue right now as the flip-side of biodiversity. Do we need to fear invaders? Can we control them? Do we choose the right targets? And are the natives always good guys?Thompson puts forward a fascinating array of narratives to explore this crucial question.

    He joins the healing of the land to the process of purifying the human spirit and proposes a way of life and a way of farming in which such healing can take place.

    In this book you will see how commonly performed operations can be found to be useless or even harmful when properly evaluated. That these claims come from an experienced, practicing orthopedic surgeon who performs many of these operations himself, makes the unsettling argument particularly compelling. Of course no surgeon is recommending invasive surgery in bad faith, but Ian Harris argues that the evidence for the success for many common operations, including knee arthroscopies, back fusion or cardiac stenting, become current accepted practice without full examination of the evidence.

    He was a city boy, unsure of what lay ahead. When he entered the forest, which would go on to become one of the last strongholds of wild tigers, it had a profound effect on him, changing his life forever.For the next forty years, he studied nearly 200 Ranthambhore tigers, spending every waking moment in close proximity to these magnificent animals. Of the various tigers he observed a handful became extra special, and it is these which come to glorious life in this book. They include Padmini, the Queen Mother, the first tiger the author got to know well; Genghis, the master predator, who invented a way of killing prey in water, the first time this had been observed anywhere in the world; Noon, one of his all-time favourites, who received her name because she was most active in the middle of the day; Broken Tooth, an exceptionally gentle male; Laxmi, a devoted mother, whose methods of raising her cubs revolutionized tiger studies; Machli, the most famous tigress in Ranthambhore, and several more.

    Although Australia’s prompt, science-led response to COVID-19 has not been perfect, it has saved tens of thousands of lives. But for decades, governments have ignored, ridiculed or understated the advice of scientists on the climate emergency.Now, in the wake of the megafires of 2020, a time of reckoning has arrived. In The Climate Cure renowned climate scientist Tim Flannery takes aim at those responsible for the campaign of obfuscation and denial that has already cost so many Australian lives and held back action on climate change.Flannery demands a new approach, based on the nation’s response to COVID-19, that will lead to effective government policies. The Climate Cure is an action plan for our future. We face a fork in the road, and must decide now between catastrophe and survival.

    Not so anymore. All but exterminated, these predators of the not-too-distant past have been reduced to minor players of the modern era. And what of it? Wildlife journalist William Stolzenburg follows in the wake of nature's topmost carnivores, and finds chaos in their absence.From the brazen mobs of deer and marauding raccoons of backyard America to streamsides of Yellowstone National Park crushed by massive herds of elk; from urchin-scoured reefs in the North Pacific to ant-devoured islands in Venezuela, Stolzenburg leads a startling tour through bizarre, impoverished landscapes of pest and plague. For anyone who has seldom given thought to the meat-eating beasts so recently missing from the web of life, here is a world of reason to think again.

    

    Belknap's Waterproof Grand Canyon River Guide (All New Color Edition)

    There's no need to look through dozens of photos of birds that don't live in Pennsylvania. This book features 117 species of Pennsylvania birds, organized by color for ease of use. Do you see a yellow bird and don't know what it is? Go to the yellow section to find out. Fact-filled information, a compare feature, range maps and detailed photographs help to ensure that you positively identify the birds that you see.

    They have done so since before recorded history. Flowers are used to celebrate all-important occasions, to express love, and are also the basis of global industries. Americans buy ten million flowers a day and perfumes are a worldwide industry worth $30 billion dollars annually. Yet, we know little about flowers, their origins, bizarre sex lives, or how humans relate and depend upon them.Stephen Buchmann takes us along on an exploratory journey of the roles flowers play in the production of our foods, spices, medicines, perfumes, while simultaneously bringing joy and health. Flowering plants continue to serve as inspiration in our myths and legends, in the fine and decorative arts, and in literary works of prose and poetry. Flowers seduce us—and animals, too—through their myriad shapes, colors, textures, and scents. And because of our extraordinary appetite for more unusual and beautiful “super flowers,” plant breeders have created such unnatural blooms as blue roses and black petunias to cater to the human world of haute couture fashion. In so doing, the nectar and pollen vital to the bees, butterflies, and bats of the world, are being reduced. Buchmann explains the unfortunate consequences, and explores how to counter them by growing the right flowers. Here, he integrates fascinating stories about the many colorful personalities who populate the world of flowers, and the flowers and pollinators themselves, with a research-based narrative that illuminates just why there is, indeed, a Reason for Flowers.

    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.

    Humans: from the beginning will appeal to anybody who reads about these discoveries, is intrigued by them, and would like to know more about prehistory. Now brought fully up to date for 2015, Humans: from the beginning is a single-volume guide to the human past. Drawing upon expert literature and the latest multi-disciplinary research, this rigorous but accessible book traces the whole of the human story from the first apes to the first cities. The end product of five years of research, it has also been planned from the ground up to take advantage of the eBook format and ease access to visual matter, references and glossary items. Humans: from the beginning is written for the non-specialist, but it is sufficiently comprehensive in scope, rigorous in content, and well-referenced to serve as an ideal ‘one-stop’ text not only for undergraduate students of relevant disciplines, but also to postgraduates, researchers and other academics seeking to broaden their knowledge. This 32-chapter work presents an even-handed coverage of topics including: • How climate change has long played a pivotal role in our affairs and those of our ancestors. • How humans evolved from apes at a time when the apes were facing extinction. • Why the last common ancestor of humans and chimpanzees (our closest living relatives) might have been more like a human than a chimpanzee. • A possible Asian rather than African origin for the earliest humans. • Why the Neanderthals were not the dimwits of popular imagination. • How language and modern human behaviour evolved: an examination of theories including those of Robin Dunbar, Steven Mithen and Derek Bickerton. • How the small group of modern humans that eventually colonised the whole of the non-African world might have started from Arabia rather than Africa. • David Lewis-Williams’ theory that the cave art of Ice Age Europe was linked to a shamanistic belief system that might be rooted in the very architecture of the human brain. • Why the Neolithic transition from hunter-gathering to agriculture was a lengthy process, with many down sides. • Colin Renfrew’s still-controversial theory that the spread of farming communities in Neolithic times was responsible for the languages now spoken in many parts of the world. • How an ‘Urban Revolution’ replaced egalitarian farming communities with socially-stratified kingdoms and city-states in just a few millennia. • How the complex, technological societies of today have much in common with not only the earliest states but much earlier primate societies.

    Now Nisbet turns his attention to David Douglas, the premier botanical explorer in the Pacific Northwest and throughout other areas of western North America. Douglas's discoveries include hundreds of western plants--most notably the Douglas Fir. The Collector tracks Douglas's fascinating history, from his humble birth in Scotland in 1799 to his botanical training under the famed William Jackson Hooker, and details his adventures in North America discovering exotic new plants for the English and European market. The book takes readers along on Douglas's journeys into a literal brave new world of then-obscure realms from Puget Sound to the Sandwich Islands. In telling Douglas's story, Nisbet evokes a lost world of early exploration, pristine nature, ambition, and cultural and class conflict with surprisingly modern resonances.

    Whenyou upgrade to Extra Class, you gain access to the entire Amateur Radio frequency spectrum. Ues this book to ace the top-level ham radio licensing exam. Our expert instruction will lead you through all of the knowledge you need to pass the exam: rules, specific operating skills and more advanced electronics theory.