Los biocombustibles

Follows The Thirteenth Amendment That Freed The Slaves, The End Of The War, And The Death Of President Abraham Lincoln.

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.

Computer science is all around us, at school, at home, and in the community. This book gives readers the essential tools they need to understand the computer science concept of data analysis. Brilliant color photographs and accessible text will engage readers and allow them to connect deeply with the concept. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience and show how data analysis works in the real world. In this book, readers look at data about the population of Chicago in order to learn more about the city. This...

Un gigantesco depredador ha destruido el embarcadero de Wala wala, y Bizcoché, Dani y Evan se sumergen en las oscuras aguas del Santuario para descubrir qué es. A bordo de Canelo 1, el sumergible que ha inventado el profesor, explorarán las profundas aguas jurásicas. Verán mosasaurios, megalodones, plesiosauros... ¡y al temibe Depredador X! ¿Podrán escapar? ¡Descúbrelo en esta trepidante aventura!

Computer science is all around us, at school, at home, and in the community. This book gives readers the essential tools they need to understand the computer science concept of testing. Brilliant color photographs and accessible text will engage readers and allow them to connect deeply with the concept. The computer science topic is paired with an age-appropriate curricular topic to deepen readers’ learning experience and show how testing works in the real world. In this book, a narrator freezes water to make ice and makes sure his process worked. This nonfiction title is paired with the...

El antiguo marinero bilbaíno Martín Saldías se convierte en espía para servir los intereses de don Carlos durante la primera guerra carlista. Tiene que llevar un mensaje que contiene una información muy importante para el desarrollo de la guerra. En el camino, para unos días en un campo militar carlista.