La compra de Luisiana (The Louisiana Purchase)

Swamps are one kind of wetland biome. Like other wetland biomes, a swamp’s water must be clean in order for the wildlife in it to thrive. Readers learn the main features of both freshwater and saltwater swamps, as well as where some of the biggest swamps are on Earth. Science curriculum topics such as food chains and conservation make the main content a great complement to classroom learning. Full-color photographs and inset maps aid readers in identifying this interesting biome in the world around them.

Children often wonder what they were like when they grew up in their mother's womb. Discover the magic and beauty of the beginning of life in nine three-dimensional illustrations of a baby in real size, month by month. This book is a great way to explain to children how their life was in their mother's womb and is the perfect gift for the arrival of a new baby.

Learn How Dams And Levees Are Built As Well As The Effects They Have On River Systems In A Region, And Places Downstream.

Este Diccionario ideológico o ATLAS LÉXICO contiene más de 200.000 voces clasificadas en unos 1.600 campos semánticos. Las palabras aparecen en listados de términos asociados, afines, vecinos o sinónimos que se prestan a la expresión de un concepto. Distingue los usos en función del contexto social (general, coloquial, malsonante, vulgar, ingenio popular y refranes); los dominios geográficos (españoles y americanos); y la actualidad del término (antiguo, desusado y recién incorporado). Además de permitir la consulta del significado de una palabra añade la posibilidad de buscar...

Essays by well-known climbers accompany a range of superb color landscape photographs that echo the great traditions of the Ansel Adams and the Sierra Club large format books of the 1970s.