¿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.

Families can be big or small, but all resemble each other in one aspect: they have a past and a present that, is also part of a broader history, that of a culture or race, or that of the world. The reader will see that family trees are used both by historians and everyday people who trace generations of relatives. Although family trees imply blood relations, the ties of love and friendship are often just as important.

Susana, una niña española que padece anorexia, se traslada una temporada al campo con sus abuelos; allí conoce a Nicoleta, una niña rumana cuyos padres han llegado aquí en busca de trabajo. Dos maneras de ver el mundo y de afrontar la realidad totalmente diferentes que, lejos de provocar enfrentamientos, llegan a entenderse y a ayudarse. En esta ocasión, nuestra joven autora nos ha planteado una situación real como la vida misma que ha tratado con una humanidad y una delicadeza especiales; la amistad y la confianza en los demás se ganan paso poco a poco para solucionar los problemas a ...

Despues de ocho anos de su ultima obra, y siete anos despues de la publicacion de su poesia reunida, Andres Sanchez Robayna ofrece a sus lectores su nuevo y esperado libro. Como Morandi o los pintores esencialistas a la manera de Cezanne, Sanchez Robayna encuentra en los objetos, en su perfil y en la luz que proyectan, en los estimulos que configuran un momento irrepetible, ocasion para explorar los signos de la naturaleza, las claves de lo real. Sus poemas, en una lengua exacta, sin condescendencia o lo retorico, logran descigrar el mundo, elevarse sobre lo cotidiano y rozar la esencia, lo...

Discover That There Are Over 8000 Kinds Of Ants Of Different Sizes, How They Live, Where They Live, And How They Reproduce.