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Animal lovers can't help but be fascinated by aardvarks, even if they think it's a little gross that these large animals use their long tongues to slurp up ants and termites. This bilingual book is full of enchanting photographs and interesting facts about these unusual-looking, but very interesting, animals.
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Las ilustraciones y fotografías detalladas de este libro fascinante nos llevan al complicado y agitado mundo de la colmena, donde observamos el "sistema de clases" rígidamente estructurado de la abeja melífera, con sus abejas obreras, zánganos y reina. Se examinan el cuerpo complejo y los sistemas internos de la abeja, a medida que se discute la historia, la producción de miel, la construcción del panal, la reproducción y la construcción de colonias.
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Aircraft carriers are truly the fortresses of the sea! Students will get an inside-out view of these incredible floating cities, from how they are constructed to how they function as important parts of a country's defense. Students also will learn about the various aircraft that are on board and the crew that keeps aircraft carriers in ship shape!
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In 1878 in Denison, Texas, a man named John Martin looked up into the sky and saw something he could not explain. Americans have been hooked on the possibility of beings from space visiting Earth ever since. A sense of wonder, and reality, are brought to some popular legends of alien encounters and sightings in this volume. The final chapter explores how these legends have become even more popular thanks to movies, television, and literature.
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Because of the biological similarities between many animals and humans, scientists can learn about diseases, and find out how humans might react to medicines, cosmetics, chemicals, and other products by testing them on animals first. According to the Humane Society of the United States, more than twenty-five million animals are used in research, testing, and education each year. Readers learn about the various philosophies on animal testing, what tests are used, and how they are performed. The book presents the pros and cons of animal testing and some of the alternative methods to animal testing that scientists are developing today.
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Artificial Intelligence is one of the most intriguing and difficult technological advances ever explored by man. It is the study of intelligent behavior and the attempt to recreate it through technology. This beginner's guide explores, not only the technology behind AI, but the current and future benefits of further exploration.
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Sin stockLos aviones supersónicos vuelan a más de 1,000 millas por hora. Los utilizan tanto los militares como las aerolíneas comerciales. Este libro está lleno de información sobre todo tipo de aviones supersónicos.
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As the world's population expands, so too does the risk of communicable disease and global pandemics. Consequently, healthcare has assumed a greater centrality in the public consciousness both in the United States and around the world. With various national and international organizations dedicated to epidemiological research and disease control, societal welfare has become an increasingly significant aspect of public policy. The historical, legal, and scientific factors that form the basis of public health locally and globally are the subjects of this relevant and revealing volume.
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Many beagles and other scent-driven canines have been used successfully to sniff out bombs, drugs, and lost people, too. Today they are even used to help the many people who have had to fight the rising problem of bedbug infestation. Age-appropriate bilingual text explores the life, training, and work of these bedbug-sniffing dogs.
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The detailed illustrations and photographs in this fascinating book take us into the complicated, hectic world of the beehive, where we observe the rigidly structured "class system" of the honeybee, with its worker bees, drones, and queen. The complex body and internal systems of the bee are examined, as the history, honey production, construction of the honeycomb, reproduction, and colony building are discussed.
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Amazing mountain animals fill the pages of this exciting bilingual series. Redesigned with new features, each book invites readers to discover the world of creatures that make their home in high places. Young learners will read about each animals unique physical characteristics, behavior, and adaptations to their environment. Through fascinating facts and brilliant photographs, these books paint a vibrant picture of the incredible array of animal life in the mountains.
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Bilingual learners will be thrilled with this outdoor guidebook about bobcats. They are rarely seen in the open, but thousands of these animal hunt throughout much of North America. These powerful predators can take down prey that is much larger than they are. Engaging text in English with standard Latin-American Spanish translation is supported by dramatic, colorful photographs.
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Sin stockLuis loves to read, but soon his house in Colombia is so full of books there's barely room for the family. What to do? Then he comes up with the perfect solution: a traveling library! He buys two donkeys, Alfa and Beto, and travels with them throughout the land, bringing books and reading to the children in faraway villages. Beautiful!
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Imagine traveling at half the speed of a jet plane without ever leaving the ground! Students will discover the technology that makes such speeds possible, from special tracks and safety precautions to aerodynamically designed trains. What are the limits to the speed of trains? What imposes those limits? Students also will read about the future of passenger train travel, from flying trains to trains that use huge magnets to levitate inches or centimeters off the track. Some trains safely reach speeds of more than 200 mph!
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Sin stockDiscute el calentamiento global, su efecto sobre los casquetes polares de la Antártida y el efecto que su fusión tiene sobre el nivel del mar, a través de una historia ficticia en formato de novela gráfica sobre una expedición científica a la Antártida.
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The spread of harmful chemicals and biological organisms can injure and kill thousands of people and make an infected area unlivable for some time to come. In the age of modern terrorism, many people fear militant organizations will unleash chemical and biological weapons in public places. This book provides readers with an overview of what these weapons are, who uses them and why, and explains how much of a threat they are to our way of life. Over time, countries have pledged to ban the use of CBWs in various agreements, with limited success.
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Chemistry is often a daunting subject for students, fostering a bewilderment that sets in upon their first encounter with the Periodic Table. This book demystifies an important aspect of the subject--chemical reactions--and demonstrates exactly how fascinating and fun chemistry can be. Starting out by explaining just what a chemical reaction is--and what it isn't--the book details in accessible language the various kinds of chemical reactions that are possible. It draws upon readily comprehensible everyday examples, like rusting metal, baking bread, battery power, digestion, rotting eggs, and burning candles. The book then turns to a survey of the history of chemical research, beginning in the Ancient and Classical Worlds, progressing to the Medieval alchemists and Renaissance innovators, and ending with the leading lights of modern chemistry. Readers will be introduced to luminaries such as Antoine Lavoisier, John Dalton, Louis Pasteur, Dmitri Mendeleyev, the Curies, and Ernest Rutherford. It concludes with an inspiring examination of how current research and cutting edge developments are using chemistry and chemical reactions to save lives and insure continued life on Earth. This book amply illustrates the accessibility, relevance, and gee-whiz fun of chemical reactions.
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This is a well-organized look as coastal regions: what shapes them, some environmental threats, and their usefulness in industry and tourism. Several beautiful and interesting coastlines are highlighted, including Cancun and the Great Barrier Reef. Readers will learn about each coastline's location, population, local industries, and environmental threats.
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Journey high into the mountains to meet the worlds largest flying land bird. Soar among the clouds with this graceful bird as it searches for food. In Condors/Cndores, learn how this incredible animal has been brought back from the brink of extinction. This special English-Spanish bilingual edition enables children to work on their second-language skills as they develop strengths in their primary language.
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The Internet brought about a total revolution in the world of information. Today, anyone with an Internet connection can access a wealth of information online. As our access to data increases, copyright laws struggle to keep up. This book examines how copyright law has been applied to online content, the emerging open source movement, fair use, proper citation practice, and the ethics of using and citing online information. It is an invaluable resource for today's students.
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Amazing mountain animals fill the pages of this exciting series. Redesigned with new features, each book invites readers to discover the world of creatures that make their home in high places. Young learners will read about each animals unique physical characteristics, behavior, and adaptations to their environment. Through fascinating facts and brilliant photographs, these books paint a vibrant picture of the incredible array of animal life in the mountains.
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Amazing mountain animals fill the pages of this exciting series. Redesigned with new features, each book invites readers to discover the world of creatures that make their home in high places. Young learners will read about each animals unique physical characteristics, behavior, and adaptations to their environment. Through fascinating facts and brilliant photographs, these books paint a vibrant picture of the incredible array of animal life in the mountains.
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Amazing animals of the desert fill the pages of this exciting bilingual series. Redesigned with new features, each book invites readers to discover the world of creatures that live in the desert. Young learners will read about each animal’s unique physical characteristics, behavior, and adaptations to their environment. Through fascinating..
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Amazing animals of the desert fill the pages of this exciting bilingual series. Redesigned with new features, each book invites readers to discover the world of creatures that live in the desert. Young learners will read about each animal’s unique physical characteristics, behavior, and adaptations to their environment. Through fascinating..
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Sin stockEn este libro, los estudiantes escuchan mientras los científicos, agencias gubernamentales y grupos de trabajo ambientales debaten y discuten el futuro de los combustibles fósiles. Los lectores descubrirán que los suministros de combustibles fósiles son limitados, las formas de conservar esta importante fuente de energía y cuáles son algunas de las fuentes de energía alternativas y más limpias.
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Even though its smaller than many killer snakes, the death adder is still very dangerous. Readers will soon discover exactly why this snake is so aptly named. Colorful photographs show this venomous snake in action as readers learn exciting facts about how death adders hunt, eat, and survive. Excellent Spanish translations provide engaging support for bilingual learners.
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Some of the most important contributors to the food chain are those creatures that help break things down: decomposers. If not for these birds, bugs, and worms organic matter couldn't be recycled back into nature. Readers will discover the different kinds of decomposers, how they do their job, and why it is so important. This fascinating book includes graphic organizers and annotated illustrations to better explain the food chain.
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Los derrames de petróleo tienen un grave impacto en el medio ambiente, matando innumerables especies silvestres, destruyendo hábitats importantes y contaminando nuestras aguas. Los lectores siguen a un grupo de voluntarios mientras aprenden sobre lo que los derrames de petróleo le hacen a nuestro medio ambiente, qué medidas se pueden tomar para limpiar después de los derrames de petróleo y las formas de evitar que ocurran futuros derrames.
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There are many different types of diamonds in the world. They come in a range of colors and can be cut into all kinds of shapes. This book shows readers that the way these different kinds of diamonds are created really isn't that different at all. Interesting facts and detailed photographs explain where these gems come from, how they're made into jewelry, and what makes them so valuable.
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Clink, clank,.. ¡Este es el sonido de otra moneda en tu alcancía! El ahorro es una costumbre que debe comenzar desde los primeros años de vida. En ocasiones las personas ahorra durante mucho tiempo para comprar algo muy importante, y este libro nos habla de cómo se gana y como se ahorra el dinero. Además nos muestra como cualquiera puede aprender cómo ahorrar dinero por medio de cuentas de ahorro e inversiones.
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Este fascinante libro revela la rica historia de este magnífico árbol y sus frutos y su importancia perdurable. Las ilustraciones y fotografías bellamente detalladas resaltan los componentes importantes del árbol y su fruto, ya que nos lleva dentro de cada uno para revelar sus estructuras y funciones internas. Este impresionante libro presenta explicaciones visuales fascinantes de cómo se injerta el árbol, cómo se cosechan y preparan las aceitunas para su envasado, y cómo se presionan para producir aceite.
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Esta es la historia de un cabello, de su ilusión por conocer la luz del sol, de bailar al ritmo del viento y, sobre todo, de vivir aventuras; pero también del impactante desafío que supone descubrir que en el cuero cabelludo, como en la vida misma, las cosas no siempre resultan como imaginamos.
Además de ser “el nuevo”, tiene algo más que le diferencia de sus compañeros; algo que no le va a facilitar en absoluto la convivencia con el resto de sus capilares vecinos. Pero el primer cabello blanco de esta frondosa cabellera está decidido a hacerse un hueco y disfrutar de la experiencia, a pesar de las dificultades que se empeñan en regalarle los que le llaman “raro” y de las complicadas situaciones que atraviesa, día tras día, un sencillo pelo humano tan único como todos los demás.
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Amazing mountain animals fill the pages of this exciting bilingual series. Redesigned with new features, each book invites readers to discover the world of creatures that make their home in high places. Young learners will read about each animals unique physical characteristics, behavior, and adaptations to their environment. Through fascinating facts and brilliant photographs, these books paint a vibrant picture of the incredible array of animal life in the mountains.
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Elma es un hada que ha perdido sus alas, y unos monstruos entrañables, que cambian de nariz, la ayudan a encontrarlas. Con sus narices de colores la enseñan a reconocer y gestionar sus emociones. Una historia de amistad que nos demuestra que las dificultades se pueden convertir en grandes oportunidades. Un cuento para contarlo y jugar con él, con dinámicas que invitan a expresar cómo nos sentimos y a trabajar habilidades emocionales.
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Emeralds are the most expensive gems in the world, but it takes a lot of time and effort for them to get that way. Readers will discover many interesting facts about this beautiful May birthstone that takes millions of years to form. Vibrant photographs capture emeralds at all stages, from the mines to beautiful pieces of jewelry.
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The world's wildlife is vanishing at an alarming rate. Scientists at the Nature Conservancy and the World Wildlife Federation estimate that one in four mammals, and a full third of Earth's amphibians are in danger of becoming extinct. Today species are becoming extinct at a rate that is anywhere from 100 to 1,000 times faster than normal. People have been in fierce competition with wild animals for land, food, and natural resources for years. When over-hunting and -fishing of species and a rise in the level of pollution is added to this mix, humans come to represent the single gravest threat to wildlife survival. Any species that disappears leaves a hole in the web of life. Mass extinction would leave so many holes that the web might totally fall apart. Humans must realize the important role wildlife plays in the survival of the planet and reverse the damage--before it's too late.