Mujeres en las ciencias (Women in Science)

As a land that’s constantly in flux, Earth sometimes reveals clues about the plants, animals, and other organisms that lived long ago. Fossils teach us much about what life was like millions of years ago, answering the questions of how Earth changed and maybe even why it changed. This essential Earth science topic is thoroughly explained through manageable text, fact boxes, informational charts and diagrams, and a glossary and index. Readers will become young Earth detectives by the time they’re through with this text!

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...

Este libro consta de diez unidades didácticas, cada una de las cuales se estructura de la siguiente manera: - Doble página de apertura - Desarrollo de contenidos - Dossier - Síntesis - Actividades complementarias. El contenido está especialmente adaptado para la Comunidad Autónoma de Andalucía.

Learn how people collect data for weather predictions, the U.S. government census, emergency rescues, and more! This Spanish-translated title teaches readers about data collection, approximation, and estimation through practical examples.

Faulkner, adem�s de haber sido el innovador de una forma de narrar que ha infl uido poderosamente en las generaciones que le han continuado, fue el cronista de los m�s notables hechos, costumbres y personajes de su tierra. Luz de agosto es una de las obras m�s representativas de un hombre que, trabajando sobre la historia y haciendo campear la imaginaci�n, logr� convertirse en uno de los escritores m�s importantes de este siglo. ENGLISH DESCRIPTION A novel about hopeful perseverance in the face of mortality, features some of Faulkner's most memorable characters: guileless,...