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SIN DESCRIPCION -
Introduces plant reproduction, discussing how plants grow and develop and what influences the growth, and describes their role in ecosystems. -
Presents a history of ancient American civilizations prior to the arrival of Columbus, discussing history, agriculture, religion, architecture, art, and politics. -
Introduces waste and how it is handled throughout the world; explains how some materials are recycled and reused; and discusses why reducing waste is an important factor in saving the environment. -
Presents an introduction to rivers and streams, including the effects they have had on human settlements and trade, and the physical geography of the earth; also examines the major rivers in the world, including the Nile, Amazon, and Ganges. -
Describes the design, construction, and operation of famous skyscrapers. -
This book looks at the business of sports, from ticket sales to merchandising to televised broadcasting. -
Readers learn about real-life case studies involving stem cell research, the sources of stem cells, ethical issues surrounding the use of stem cells, and stem cells' promising possibilities for medical use in bone marrow transplants, treating leukemia, and rebuilding injured organs. Legal issues and rulings around the world are also examined. The volume includes sidebars that provide expert viewpoints on the stem cell research debate, as well as fact boxes and summary boxes that highlight the key points in each chapter. -
This book will give students an understanding of the history of flight right up to the technology and scientific discoveries that allow us to fly planes as large as todays super jumbo jets. How are airplanes designed so they can operate safely? What is the future of flight? All of these questions and more will be answered as students take a look at super jumbo jets, inside and out! -
Discusses supersonic jets, including how they are built, different types, and what they are used for. -
Photographs and text reveal information about the longest bridge in the world, including its location, how it was built, and the safety issues involved in its upkeep. -
Presents a general history of the cultural and social aspects of the ancient Maya and Aztec empires up to the arrival of Spanish conquerors, in a book that also provides readers with instructions for creating such related craft projects as a feather fan, a mosaic mask, a codex, and a miniature pyramid temple. -
Classic / British English Are you brave enough to read four of Poe's famous horror stories? Edgar Allan Poe wrote strange stories about terrible people and evil crimes. Don't read this book late at night! -
James and Chantal are enjoying an evening of magic at the Blue Cat Club. Merlin the magician is clever and his tricks are exciting – but are they dangerous too? -
Calculating and manipulating the unknown has been the enterprise of the field of algebra since its earliest inception in Babylon and ancient Egypt. Trigonometry draws on principles presented in algebra and uses angle measurements to elaborate on geometric calculations. Essential to further mathematical and scientific study, both algebra and trigonometry provide crucial tools in managing variables and understanding the relationships between them. This volume presents the fundamentals of these fascinating areas of mathematics while chronicling their respective histories. -
Presents instructions for creating several styles of handbags, carrying cases, and wallets from common craft materials. -
Presents instructions for creating several styles of footwear from common craft materials, including sandals, flip-flops, clogs, boots, slippers, and moccasins. -
SIN DESCRIPCION -
Describes headaches and migraines, including the difference between headaches and migraines, what causes migraines to occur, and how to prevent them from reoccurring. -
In this book, readers will learn about the history of helicopters in the U.S. military, discover what different kinds are being used, and what these thrilling military helicopters are capable of. Full-color photographs place the reader side by side with the military's most amazing helicopters! -
In this book, readers will learn about the history of planes in the U.S. military, discover what different kinds are being used, and what these thrilling military planes are capable of. Full-color photographs place the reader side by side with the military's most amazing planes! -
Introduces tanks, including their different parts, how to operate a tank, and why they are important in military offenses. -
The increasing power of mobile communications devices has reached the point where they now act as a pocket-sized computer. With this much power, a wide range of downloadable applications, and always-available Internet access, the ability to use todays smartphones for productivity and schoolwork has huge potential. This book examines the uses, applications, and relative strengths and weaknesses among these devices. It also reveals how mobile devices can be used to find information related to communication, research, school work, and even fun and games. The reader will discover the latest techniques for gathering information on-the-go, in the form of digital photos, text, audio, and video, using mobile devices. They will also learn how to use those same mobile devices to organize, retrieve, and relay the information they have gathered to friends, family, study partners, and teachers. The book also includes the latest guidelines for proper digital and cell phone etiquette and security, Myths and Facts, and 1 Great Questions to Ask an IT Specialist -
Describes modern developments in the field of genetics, discussing the mapping of the human genome, the genetic causes of afflictions, and genetic modification. -
Our planet, Earth, has only one moon, but some of the other planets in our solar system have more. Young learners explore the fascinating features of these other moons. -
Introduces the motorcycle, including its different parts, how it functions, and the safety precautions to operating a motorcycle. -
Presents the history of the motorcycle and the many improvements that have occured. -
Discover the animals of the American mountains! Readers will learn about mammals, birds, reptiles and much more in this fun book that explores animal life in the U.S. mountain habitat. -
Describes how mountains form, the animals that live there, and how to protect mountainous environments, and includes details on each continent's largest peaks. -
In this book, readers will learn about the history of ships in the U.S. Navy, discover what different kinds are being used, and what these thrilling Navy ships are capable of. Full-color photographs place the reader side by side with the Navy's most amazing ships!
