La luz y los colores para los más curiosos

Readers will learn about the important relationship between producers and consumers as well as buyers and sellers and how they all work together to create a healthy economy. This instructive volume defines basic economic concepts like goods and services and explains production with examples of the different types of production. It also covers the primary and secondary industries that produce goods. Concepts such as marketing and advertising are also covered, for a well-rounded view of this fascinating aspect of the economy.

Describes the frogs, toads, and salamanders of Mexico's Yucatan Peninsula, looking particularly at the wide variety of adaptations found in the few species that dwell there.

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

A little wooly teddy bear, a long journey to the ends of the earth, and magical complicity between words and images, this story reveals the great heart of Señor M.