Describes valleys, including how they form, plants and animals on valleys, how people and weather change valleys, Death Valley, and the Great Rift Valley.

Reprint of the original, first published in 1871. The publishing house Anatiposi publishes historical books as reprints. Due to their age, these books may have missing pages or inferior quality. Our aim is to preserve these books and make them available to the public so that they do not get lost.

What exactly is a valley? Your young readers will find the answers inside this book, with its lush, 4-color photos and kid-friendly text. Readers will find out that there are many different kinds of valleys, such as u-shaped valleys and rift valleys. They will also find out what kinds of plants and animals make valleys their home and they’ll be introduced to some famous valleys, too. This book will be a great addition to your collection!

Our knowledge of Mars has grown enormously over the last decade as a result of the Mars Global Surveyor, Mars Odyssey, Mars Express, and the two Mars Rover missions. This book is a systematic summary of what we have learnt about the geological evolution of Mars as a result of these missions. It describes the diverse Martian surface features and summarizes current ideas as to how, when, and under what conditions they formed, and explores how Earth and Mars differ and why the two planets evolved so differently. The author also discusses possible implications of the geologic history for the origin and survival of indigenous Martian life. Up-to-date and highly illustrated, this book will be a principal reference for researchers and graduate students in planetary science. The comprehensive list of references will also assist readers in pursuing further information on the subject. Colour images can be found at www.cambridge.org/9780521872010.

Many people know that valleys are areas of low land, but they may be unaware of all the different kinds of valleys that exist and how they're formed. Readers will learn about valleys from an accessible narrative that introduces key earth science concepts. Vivid photographs show examples of valleys, helping readers learn to identify these landforms, which is an important part of the elementary social studies curriculum.