Crisis energética: El futuro de los combustibles fósiles (Energy Crisis: The Future of Fossil Fuels)

From art and architecture to politics, philosophy, and mathematics, "western civilization" owes a great deal to the achievements of ancient Greece, but what do we really know about this long-gone civilization? How did geography influence the politics of the Greek city-states? What's the difference between an agora and an acropolis? This book takes readers several thousand years into the past, when independent city-states ruled the Mediterranean Sea, to find the answers. Full-color photographs and maps, accompanied by accessible text, introduce readers to the many contributions the ancient...

Asteroids and comets shoot straight through space. They just look like bright lights with tails, but there is much more to these fascinating objects! Learn all about asteroids and comets in this Spanish-translated book. This 6-Pack includes six copies of this title and a lesson plan.

Una Biblia con el texto de la Reina Valera 1960 a la par de la versión inglesa New King James. Contiene además 128 páginas con lecturas que ayudarán al joven a acercarse a Cristo con valiosos consejos y recomendaciones sobre la vida cristiana y la relación con su Creador.

Books in this series give readers an exciting tour through the world of colors. Each book uses simple, repetitive text to teach basic vocabulary and includes stunning photographs that show each color in a variety of contexts. In Red, children can view red rocks, flowers, stems, fur, and more!

One of the skills employers want most in new hires is the ability to speak well. Public speaking can not only advance a person in almost any career but can also help an individual do better in school as well. Following the English Language Arts standards for Speaking and Listening, this book teaches readers why public speaking can be such an effective tool, how to craft a powerful speech, and how to overcome one of the most common problems people have with talking in front of a crowd�stage fright.