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

Diamonds and salt are both minerals, but diamonds are more rare than salt. Curious readers will learn what physical and chemical conditions must be present for minerals to form. They'll discover how minerals are identified and how they are used in daily life. Informative and interesting text presents readers with this science content in a fun way. A graphic organizer shows how different minerals are identified and fact boxes provide readers with exciting supplementary information.

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.

This Title Explains What An Ecosystem Is And How The Plants And Animals Within An Ecosystem Rely On And Effect Its Existence. Different Types Of Ecosystems Are Described, As Well As The Food Webs Within Them. How Some Changes To An Ecosystem Can Be Good And How Some Harmful Changes Can Destroy Them. Teaches Students What An Important Role They Can Play In Keeping These Intricate Ecosystems Alive.

Learn all about planet Earth in this engaging, colorful title! Earth is our home. It is a big, beautiful place that orbits the sun. What else is there to know about Earth? Read this Spanish-translated book to find out!

This Book Talks About How Everyone Has Problems And How Most Problems Have Solutions. How It Is Important To Stop And Think, Get All The Facts , And Be Better Prepared To Solve A Problem When It Happens To Them. Complete K-5 Social Skills Collection. Paired With A Fiction Social Skills Title.

Durante la Segunda Guerra Mundial, el salón de té Embassy, uno de los centros sociales más elegantes del Madrid de la época, se convirtió en el lugar de encuentro de numerosos agentes y cooperantes secretos de los servicios de inteligencia británicos. Entre ellos, el doctor Eduardo Martínez Alonso, el padre de la autora. En esta histórica, su hija busca demuestrar cómo este médico ayudó directamente en la red humanitaria organizada por el Servicio Secreto británico, que, a través de España, evacuaba a refugiados europeos hacia Portugal y Gibraltar. Miles de perseguidos por el...