¿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.

What does swimming in a pool, drinking through a straw, breathing in air, and circulating blood all have in common? They all require a form of air or water pressure! Readers will discover the variety of ways that air and water pressure make an impact on our lives and the things in them. This fact-filled, Spanish-translated nonfiction title includes real-life examples and basic experiments to aid in the development of understanding physic and scientific concepts. Readers will be introduced to and learn about Archimedes Principle, atmospheric pressure, vacuums, water density, and hydraulics...

Memorias del hielo es la tercera entrega de la saga �Malaz: El Libro de los Ca�dos�, la decalog�a originalmente publicada entre 1999 y 2011 que ha convertido al escritor canadiense Steven Erikson en una de las mayores voces de la fantas�a �pica contempor�nea. Desde entonces, esta obra maestra de la imaginaci�n est� considerada una de las series m�s ambiciosas del g�nero de los �ltimos a�os. Una fuerza aterradora ha surgido en el continente asolado de Genabackis. Como una marea de sangre corrompida, el Dominio Painita cruza el continente como lava hirviente que...

¿Cómo involucras realmente a los estudiantes en el aprendizaje de la historia? Cuando los estudiantes establecen conexiones personales con la asignatura, están mucho más motivados para aprender. Este libro en español ofrece relatos de la historia de primera mano que brindan una visión personal de los eventos históricos. Presente a los estudiantes a los primeros colonos de California, incluidos John Bidwell, Jim Beckwourth, Jedediah Smith, Sarah Royce, Charley Parkhurst, Kit Carson, el partido Donner y más. Con un diseño visualmente atractivo, este libro presenta texto cautivador,...

Índice: - I. Introducción - II. La industria migratoria del control y del rescate - III. Población extranjera y políticas públicas en la CAPV - IV. Administración corporativa y derechos fundamentales. Los turnos de oficio de extranjería - V. La detención, internamiento y expulsión de población extranjera en situación irregular en la CAV: Modalidades y problemáticas - VI. Conclusiones Bibliografía.