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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.