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

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.

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.

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.

Part of a beautiful set of board books, the Animales/Animals title will delight children as they begin to learn words in Spanish & English. The illustrations are in vivid colors that will ultimately enhance their attention and make learning simpler. Young children will want to flip through this book and others in the series time and time again!

A collection of simple prayers arranged in such categories as "Mi hora de comer," Mis sentimientos," and "Mis días especiales.

Let’s Make a Volcano Spanish Edition. What do you know about a volcano? When a mountain erupts, it explodes! Hot melted rock, called lava, comes out of its top and flows down the side of the mountain! People need to keep away from real volcanoes, but you can have fun making your own volcano!

en50MINUTOS.es te ofrece un análisis rápido y conciso de La clave del éxito de Malcolm Gladwell, su obra más exitosa debido a la originalidad de los conceptos presentados y a su agradable estilo. Si quieres descubrir en un tiempo récord cuál es el punto clave para que se originen las epidemias sociales, ¡en50Minutos.es te lo pone fácil! ¡Comienza hoy mismo a ampliar tus horizontes con en50MINUTOS.es! En tan solo 50 minutos, este libro te aportará: • Los trucos para encontrar la clave del éxito, que Malcolm Gladwell nos explica a través de ejemplos sacados de hechos cotidianos de ...