El género explicado a un marciano

¡Skuiter ha desaparecido! Rápidamente se ponen todos a buscarlo hasta que descubren que... ¡ha ido al santuario! Dani, Evan, Bizcoché, Julián y Maribel viajan hasta el Jurásico para buscar a su amigo. ¿Estará en peligro? Pero cuando llegan, descubren que algo terrible sucede en el mundo secreto de los dinosaurios. Y la única forma de salvarlo es encontrar la cueva del T-Rex dorado.

Había una vez un gorrión muy preocupado. Todas las demás aves levantaban la vista para mirar el magnífico cielo azul y cantaban de alegría; pero no el gorrión muy preocupado. Él solo se preocupaba. Le preocupaba volar, le preocupaba que le faltara comida, le preocupaba encontrar una pareja y construir un nido... ¡y sobre todo le preocupaba el terrible gavilán!Hasta que descubrió algo muy importante.There was once a Very Worried Sparrow. All the other birds looked up at the bright blue sky and sang for joy. But not the Very Worried Sparrow. He just worried. He worried about flying,...

Readers will learn about the important relationship between producers and consumers as well as buyers and sellers and how they all work together to create a healthy economy. This instructive volume defines basic economic concepts like goods and services and explains production with examples of the different types of production. It also covers the primary and secondary industries that produce goods. Concepts such as marketing and advertising are also covered, for a well-rounded view of this fascinating aspect of the economy.

Uncover some of the most infamous disasters in the world including the Hindenburg, the sinking of the Titanic, the Dust Bowl, BP oil spill, the Hiroshima and Nagasaki atomic bombs, and the Chernobyl disaster in this shocking book. With its intriguing facts, vivid images, helpful graphs and maps, and informational text, this fascinating, Spanish-translated nonfiction title will keep readers informed, engaged, and interested from cover to cover.