El Pacto Del Mayflower /

Provides The History Of Biofuels, Different Uses, Positive And Negative Characteristics, And How They Will Impact The Future.

Defines levers, explains their functions, and suggests simple experiments to demonstrate how they work.

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

Enamorado de la vida y de las causas de los oprimidos, Neruda, poeta del amor y la libertad (premio Nobel de Literatura 1971), representa y sintetiza todo el vigor y contradicciones de un mundo a la vez muy reciente y antiguo: América del Sur.

Follow the life and nonviolent work of Mohandas Gandhi through his childhood in India, his education in Great Britain, and his work leading peace and equality movements in South Africa and India. This book provides significant social studies connections as well as vocabulary related to Gandhi.

Death Valley is one of the hottest and driest deserts of the world! Readers are taken on an adventure through Death Valley to learn about the plants and animals that survive in this dry, hot desert landscape in this engaging, Spanish-translated nonfiction title. Featuring vivid photographs, informational text, and riveting facts about desert ecology, readers will be fascinated from beginning to end!

Presents information about super jumbo jets, looking at the history and development of jets, discussing various aspects of design and construction, and exploring different types of jets, including the Concorde and the Airbus A380.