Cómo funcionan los ecosistemas

Este libro, con descriptivas ilustraciones, incluye información básica sobre el tema de los sentidos humanos y establece interesantes comparaciones con los de los animales Con el fin de captar las sensaciones del mundo que lo rodea, el ser humano utiliza los sentidos; ojos, nariz, oídos, lengua y piel son los órganos que reciben los estímulos y los envían al cerebro, que identifica a qué corresponde cada percepción. De este modo, desde el nacimiento, en la memoria se va acumulando información sobre la forma en que se asocian las sensaciones y su significado: el aroma del pastel con...

It was September 14, 1814, and America and Great Britain were at war. Frances Scott Key watched from the deck of a British ship, where he was being held captive, as cannons exploded around them. After 25 hours, the fighting ceased and Key peered through the clearing smoke, looking for some sign as to the outcome of the battle. Was the American flag still flying? His wartime experience inspired Key to write a poem, which was later set to music and became America’s national anthem. This book tells the story of the inspiration behind our national anthem, which helped transform the flag into a...

This book introduces you to zebras, including their size, diet and everyday behavior, which highlights differences between those in the wild and those living in a zoo habitat.

While the Great Depression was indisputably a difficult period in American history, it did lead to certain developments that we still benefit from today. One for the most significant examples of this is Social Security, which helps a whole generation of retired Americans. The book offers a concise description of the Great Depression, including analysis of its causes and its effects. Chapters focus on different aspects of the period, including culture, the arts, and science and technology. The dynamic design displays images of posters and experiences from the Depression era. This informative,...