Se que estas aqui/ I Know You're Here

There are many steps in the nitrogen cycle that include difficult concepts and words: denitrification, prokaryotes, ammonia, and more. With the help of this understandable book, even struggling readers will grasp this cycle of nature. Low-level language, fact boxes, and an extended glossary provide readers with essential vocabulary explanations that allow them to further understand each step of the cycle. Full-color diagrams aid readers' comprehension as they move through the cycle from start to finish, and then around again.

From eye patches and peg legs to walking the plank and pirate ships, this fun and informative activity book discusses the facts and legends surrounding pirates and then encourages kids to search for them within the book. Desde los parches de ojo y las patas de palo hasta caminando por el tablón y los barcos piratas, este divertido e informativo libro de actividades discute los hechos y las leyendas que rodean los piratas y entonces anima a los niños a buscarlos dentro de las páginas del libro.

The world is filled with curious objects made by plants, animals, and even by the Earth itself. Dive into this collection of more than 100 intriguing items from the natural world and discover the stories behind them. Learn how huge whales eat tiny animals from looking at their bristly teeth, why butterflies shine and glitter in the sunlight from seeing their minute wing scales, how plants transport water and food around from examining a delicate leaf skeleton, and what makes every snowflake unique from admiring their miniature, branching crystals of ice. Birds' eggs, a lump of coal, a glass...

La Geología es una ciencia sumamente atractiva ya que abarca cuestiones trascendentales relacionadas con nuestro planeta: su origen, su formación, la vida en tiempos pasados y los procesos actuales de evolución, en la que los seres humanos intervenimos de manera activa. En este volumen se analiza, además de su origen y formación, la estructura de la Tierra, la composición de la atmósfera, la deriva de los continentes, los volcanes, la formación del relieve, los glaciares, el mar, el ciclo geológico y los mapas.