¿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.

Los Diarios (I -18-10-1939 a 31-07-1949- y II -12-08-1956 a 16-06-1958) de José Lezama Lima, junto a Cartas a Eloísa y otra correspondencia, constituyen los fragmentos más íntimos de su escritura. En ambos se aprecian las dos grandes pasiones del habanero universal: la amistad y el insaciable apetito por la cultura, no para acumular sino como apropiación estimulante para sus muchas y laberínticas ideaciones. Nada le es ajeno: lo inmediato ni lo lejano. Transcurren por las páginas de los Diarios las anotaciones y relumbrones que, más tarde, se transfigurarían en la encarnadura de su...

La mujer del porvenir es un vibrante y lucido ensayo sobre la independencia de la mujer y su futuro en la sociedad moderna. Escrito en la Espana del siglo XIX, este texto destaca por espiritu vanguardista.

An expertly written Spanish B course now updated for first examination 2020, providing students with thought-provoking materials to help them develop strong language skills and solid critical thinking. The coursebook helps students develop their Spanish language skills as they explore the five themes from the new IB Diploma Language B guide: identities, experiences, human ingenuity, social organisation and sharing the planet. Each unit begins with 'big questions' that get learners thinking about global topics such as, 'how do we express our identity?' These help students appreciate wider...

Describes how a poor old lady has nothing but all the rich goods she has, and no one to care for her but all her servants.