¿Por qué hibernan los animales? (Why Animals Hibernate)

The rock cycle has been taking place for millions of years. However, geologists have only known about this phenomenon for about 300 years. Young terrestrial explorers are introduced to different types of rocks, where in the cycle these rocks fit, and where in Earth's layers each step takes place. Fact boxes provide readers with fun additional information. A diagram helps readers make sense of the new information they're learning.

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock's chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.

Although Earth is mostly made up of igneous and metamorphic rock, sedimentary rock covers about 75 percent of Earth's land surface. This means it's the most visible kind of rock on Earth. Sedimentary rocks form when sediment accumulates and compacts. Your readers will learn how sedimentary rocks form, the different types of sedimentary rocks, and how people use sedimentary rocks. Fun fact boxes provide readers with additional information. A helpful diagram illustrates how sedimentary rocks form.

Los escritos de Conchita Bermejo Jiménez han sido publicados como homenaje a la autora. Varios de ellos, muy pocos, habían sido publicados; algunos habían recibido - hace más de cuarenta años- premios muy importantes en su momento, pero nadie podía imaginar que Conchita tuviese guardadas en sus carpetas tantas páginas repletas de belleza, sensibilidad e inteligencia.

Spanish Language Discover Series Books for Babies & Toddlers: Pets Who wants a pet? Just because you know you'll be the one to take care of your child's pet, doesn't mean you have to stop them from dreaming. Cats, dogs, hamsters and horses--there's a pet for everyone in this book. Each page features a beautiful photo of a pet with a simple title beneath. Used as a jumpstart for interaction, Discover Series Picture Books are a great way to introduce farm animals, their sounds and colors to kids. In this Xist Kids Spanish Edition, Spanish text brings the story to new audiences. This book is in...

Destacada dramaturga tremendamente crítica con la hipocresía de su sociedad, destapó y retrató la tipología de la mujer sureña norteamericana a través de sus obras. Valiente, enigmática y conflictiva, su compromiso ideológico la llevó a defender y apoyar causas políticas como la Guerra Civil Española o a criticar ferozmente la “caza de brujas” de McCarthy.

¿Cómo de grande es el universo? ¿Podremos algún día viajar a otras estrellas? ¿Qué es un agujero negro? ¡Descúbrelo con este libro! ¿Alguna vez has levantado la vista al cielo en una noche estrellada y te has dejado llevar por la imaginación? Igual en ese momento te has trasladado a mundos que van más allá de lo que podemos imaginar en la Tierra. Algunos con vida, puede que inteligente, y otros completamente inhóspitos e infernales. O quizá simplemente te has preguntado cuántas estrellas hay en la Vía Láctea. Si alguna vez te has hecho alguna de estas preguntas, este libro...