¿Qué Son Los Proveedores y Consumidores? (What Are Producers and Consumers?)

Having a job and earning money are a part of everyday life for most people, especially adults. The concept seems fairly straightforward: one works to earn. This volume discerns the difference between a job and a career, as well as how a job can develop into a career. Readers will learn why a community's economy needs jobs, how paying someone to do a job helps the person who is paying them, and even about job loss and its consequences. The text also explains different jobs and their effects on the economy, such as those of professional, production, arts, and government and military jobs.

Libro para adquirir el fundamento de los mecanismos teórico-prácticos de los equilibrios químicos que tienen lugar en disoluciones acuosas. Se inicia con una presentación de los compuestos químicos, de las reacciones químicas y las ecuaciones químicas con los conceptos estequiométricos necesarios para exponer la disociación electrolítica, sus consecuencias y las diversas formas químicas de cuantificar los compuestos en estado puro y en disolución, teniendo en cuenta su disociación y con la utilización de cifras significativas, explicando una estadística básica para la...

Introducción, traducción y notas de J. L. Calvo Martínez y M. a D. Sánchez Romero. Revisada por A. Pérez Jiménez.

"Simple text and photos present the seasonal weather cycle and activities to do in each season"--Provided by publisher.

From hermit crabs that make a home out of anything they can find to tiny termites that build tall towers, animals of all kinds are architects! In this engaging, Spanish-translated nonfiction title, elementary children will learn about these amazing animal architects and the things they build for habitation and camouflage through vivid images, stimulating facts, informational text, a helpful glossary, and a reference list of useful websites. This 6-Pack includes six copies of this title and a lesson plan.