¿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.

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.

An introduction to taipans, snakes from Australia and New Guinea, describes the three different kinds of taipan, physical characteristics, life cycle, habitat, and predatory behavior.

[Poema de tema mitológico compuesto por Kā.lidā.sa (400 d.C.). narra la historia de amor entre Ś.iva y Pā.rvatī., reflejando también la cultura de la India clásica.] Traducción con introducción y notas del Kumarasambhava (El origen de Kumara), poema épico-lírico de temática mitológica, compuesto por Kalidasa (hacia 400 d.C.), el más celebrado autor en sánscrito clásico. El hilo conductor de la narración -la historia de amor entre Siva y Parvati- aparece subordinado a la ornamentación y el virtuosismo formal. en las 641 estrofas se ven reflejados múltiples aspectos de la...

Stephen F. Austin grew up to become known as the Father of Texas. Readers can learn about his interesting and incredible life in this appealing biography that has been translated into Spanish and highlights both Austin's life and Texas history. Through vivid images and illustrations, supportive text, an accommodating glossary and index, and fascinating facts, readers will learn about Texas pioneers, the empresario system, Freemasons, and how Austin became such an important figure in Texas history.

A dictionary tailored for the Latin American market is an ideal supplement to the middle school curriculum and includes up-to-date definitions, example sentences, synonyms and antonyms, and more. Original.