El ciclo del nitrógeno (The Nitrogen Cycle)

What’s the difference between a seal and a sea lion? These “second cousins” of the sea look similar, but there are many ways to tell these creatures apart. From ear shape to the noises they make to communicate, seals and sea lions are amazing creatures with both shared features and many truly unique attributes. They both share an ocean habitat, but when readers take a closer look, it’s easy to discover how they each fight off predators, mate, and raise their young in different ways. Captivating full-color photographs help to bring these marvelous mammals to vivid life.

INTERVENTIONS WITH MINORS - Socio educative action - Most of the time, the irregular behaviour of young people is the outcome of what society has offered to them. This book studies the methodology, the levels of the intervention, preventive measures, assistance and rehabilitative intervention, in the work with families and minors in the network of primary attention. The situations of social risk, the necessities and the problems of minors are exposed making a special mention of the educational ones, and the professional figures that act in this field.

Una obra sobre todas las orientaciones sexuales para todas las personas, sin importar su género o sexualidad. • James Dawson ha recibido el premio Queen of Teen 2014. • Este libro es gay es una obra divertida y honesta que llena un hueco en la no ficción homosexual. A veces, a los chicos les gustan otros chicos. A veces, a las chicas les gustan otras chicas. A veces, a las chicas les gustan los chicos y las chicas. A veces, a los chicos les gustan las chicas y los chicos. A veces, a las personas no les gustan ni chicos ni chicas. A veces, un chico querría ser una chica. A veces, una...

This inspiring biographical series ties in with elementary history, science, and social studies curricula, providing teachers with a valuable interdisciplinary resource. With these books, young readers will discover historical figures who devoted their lives to making the world a better place, and changed the course of history. Text copyright 2004 Lectorum Publications, Inc.