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

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.

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.

Besides animals, plants are commonly the most well-known living things. Readers of this captivating volume will learn all about plants, from the basics of what constitutes a plant to how they are able to survive in different kinds of environments. A dynamic page layout features simple and accessible text paired closely with eye-catching photographs. Thought-provoking content helps readers develop a strong grasp of important life science concepts. Developing readers will be excited to pick up this informative volume.

Poeta exigente, de obra decantada, que con solo tres titulos se ha situado entre las voces imprescindibles de la literatura espanola, Antonio Cabrera ofrece en su poesia meditativa un reto intelectual y un refugio de expresion segura. Piedras al agua, su nuevo poemario, lo confirma como un autor primordial.

Have you ever wondered where inventors get some of their ideas? This answer may surprise you: sometimes the inspiration comes from plants! Learn how some tiny plants have made a huge difference in the world.

Robin Sharma, autor del internacional best seller El monje que vendió su Ferrari, regresa a la parábola con una historia inspiracional acerca del nuevo significado y valor del liderazgo. Robin Sharma ha compartido durante más de quince años su fórmula para el éxito con las empresas líderes de Fortune 500 y personajes destacados en todo el mundo, una receta que le ha convertido en uno de los asesores de liderazgo más solicitados internacionalmente. Ahora, por primera vez, Sharma comparte sus conocimientos excepcionales con todos sus lectores. Siguiendo sus consejos podrás realizarte...