¿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.

Koba el Temible –un libro de memorias, una crónica, una meditación sobre Stalin y su legado– es una continuación de Experiencia, la aplaudida autobiografía de Martin Amis. Es básicamente un libro político sin dejar de ser personal. Se centra en un importante punto débil del pensamiento del siglo XX: la tolerancia de los intelectuales occidentales ante el comunismo. Entre el personal comienzo y el final personal, Amis nos ofrece el mejor «cursillo» que se ha escrito sobre Stalin: Koba el Temible, lósif el Terrible. El padre del autor, Kingsley Amis, aunque manifestó tendencias...

The scientific method lists important steps in the process of conducting scientific study and research. With detailed images and fascinating sidebars, this nonfiction book explores the scientific method and scientific practices in depth, and introduces students to new concepts, vocabulary terms, and STEM topics. Aligned to state and national standards, the leveled text supports students reading at above-, below-, and on-grade level. The fun lab activity encourages students to think like scientists. Keep students engaged in learning with this Spanish book.

Angus: My mixed-breed cat, half domestic tabby, half Scottish wildcat. The size of a small Labrador, only mad. Thongs: Stupid underwear. What's the point of them, anyway? They just go up your bum, as far as I can tell. Full-Frontal Snogging: Kissing with all the trimmings, lip to lip, open mouth, tongues ... everything.

With a direct tone and based on testimony, questions, real emotions, and inquiries, this book advises adolescent young men on several different topics: muscles, sports, women, acne, humor, the Internet, music, jokes, money, risks, and protection, among others. A book filled with information, practical ideas, modern tips, and illustrations, it has the added benefit of being endorsed by professionals specializing in each of the subjects it covers. Con un tono directo y sin prejuicio, este libro surge de testimonios, preguntas, emociones e inquietudes reales, intentando orientar y dar respuesta...