¿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.

Practice data analysis while learning about endangered species! This title allows young readers to improve their understanding of data analysis and graphing methods, teaching them about probability and STEM skills through bar graphs and pictographs. This book includes engaging examples of wild animals who are endangered species, teaching readers about their habitats, their greatest threats, and their predicted populations. Vibrant images, exciting examples, and clear mathematical diagrams and charts engage readers while making them more confident in their data analysis skills.

La figura de Federico García Lorca abarca, tanto en España como en el exterior, mucho más que su literatura. Su poesía, traducida a infinidad de lenguas, recorre paisajes, hurga en tradiciones y denuncia injusticias con la maestría de quien ha sabido utilizar la pluma como pocos, y sus libros continúan leyéndose sin atender al paso del tiempo ni a las arbitrariedades de la moda. En este libro, se ofrecen al lector clásicos lorquianos como el Romancero gitano o el Poema del cante jondo, junto con las dos conferencias pronunciadas por el poeta en la presentación de los mismos, además...

La presente traducción castellana representa una novedad en el panorama internacional al ser la primera que se realiza a un idioma moderno. Los amantes de la cultura de al-Andalus tienen, pues, en sus manos una joya bibliográfica que será de especial interés para los estudiosos de historia de la medicina y del pensamiento medieval. El sabio andalusí Averroes, notable jurista y filósofo de primer orden, ejerció también como médico en la corte almohade de Marraquech. Fruto de esos conocimientos teórico-prácticos es el libro que escribió con el título de «Kulliyy&āt», en el que...

Besides oil, Texas has long been associated with cattle and agriculture. Learning about these industries will allow readers understand how valuable their development is to the growth of the state of Texas, as well as America's economy.