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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...

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

TACITAS MILAGRODAS: CAFÉ PARA TODOS, es una obra corta de auto-ayuda y de auto-corrección, salpicada de humor, de filosofía popular, y de espiritualidad. Con mensajes directos, sencillos, pero,profundos a la vez. Está escrita en forma amena,con sencillez,humildad, sinceridad,pero, sobretodo, con MUCHO AMOR. En cada una de sus páginas encontrarás un mensaje con el cual podrás identificarte Fácilmente, ya que la sabiduría popular que destila este libro, no le es ajena a nadie. Es una recolección de refranes del folklore dominicano, pero, también hace referen- cia a refranes communes...

Why do we need food to live? Find out in this informative title that explains the importance of food to all living things.