Los biocombustibles

A simple biography of the naturalist who founded the Sierra Club and was influential in establishing the national park system.

El Mayflower es un barco que ha llegado a ser célebre en la historia de los Estados Unidos porque en 1620 transportó desde Inglaterra al grupo conocido como "los peregrinos", quienes serían los primeros colonos europeos en establecerse en Norteamérica. Ellos zarparon desde el puerto inglés de Southampton y bautizaron como Nueva Inglaterra a la tierra que los acogió. Como señala este libro, el Pacto del Mayflower designa el acuerdo que los hombres adultos de esta comunidad firmaron a bordo del barco para fijar criterios generales que sirvieran como fundamento para el gobierno de la...

The Uses Of Wind Energy Is The Topic Of This Book. Explains The Positive And Negative Impact This Form Of Energy Can Have On Our World.

During the California gold rush, the state's population soared, its economy grew, new towns popped up, and its cities swelled. The state would not be what it is today without the gold rush. Help students achieve literacy in social studies through dynamic primary source documents! Primary sources provide authentic nonfiction reading materials, and help students understand continuity and change over time. This Interactiv-eBook offers instructional opportunities to guide students to increased fluency and comprehension of nonfiction text. Aligned to the National Council for Social Studies (NCSS)...

Read Along or Enhanced eBook: From Stonehenge to the Bermuda Triangle, there are many places on Earth that remain a mystery to scientists! Readers will discover these curious places--and more!--as they move through this fascinating, Spanish-translated nonfiction title. This mysterious book features detailed images, informational text, and stimulating facts and theories in conjunction with upper-level features, such as chapter format, a glossary of terms, and an index.

Con texto cuidadosamente organizado en niveles y fotografias frescas y vibrantes capturamos la atención de los jóvenes lectores para que aprendan sobre las tradiciones y celebraciones de Hanukkah. Además de tener un glosario con imágenes, ayudamos a desarrollar habilidades de lectura informativa con preguntas de pensamiento crítico apropiadas para esta edad. Carefully leveled text and fresh, vibrant photos engage young readers in learning about the traditions and celebrations of Hanukkah. Age-appropriate critical thinking questions and a photo glossary help build nonfiction learning...

The underlying theme of Three Centuries of Greek Culture under the Roman Empire is the idea that, under Roman rule, Greek culture was still alive and dynamic and continued to exert a degree of cultural domination, either real or apparent. So, we hope to analyse the meanings of concepts such as “Greek” or “Greece” in the Empire. Are we right to assume that there was a clear opposition between Greek and Roman? Or would it be more accurate to speak of a “Graeco-Roman world”? It would certainly be possible to make a list of “elements of identity”, on both sides —Greek and...