Theresa Emminizer
Author
Language
English
Formats
Description
"Almost 20,000 years ago, Earth's climate began to warm. Because of the changing temperatures, a miles-thick ice sheet started to shift. As the ice sheet moved, it carved deep pits in the land and left water in its wake. This melted ice filled the new cavities. This is the story of America's Great Lakes: Superior, Michigan, Huron, Erie, and Ontario. Enriched with stunning photographs and informative fact boxes and sidebars, this educational text sheds...
Author
Language
English
Formats
Description
"The Grand Canyon is one of the most striking geographical features on Earth. Every year, millions of tourists flock to the Grand Canyon to witness its majesty in person. How exactly was this masterpiece of nature created? In this informative book, readers will learn about how the mighty Colorado River carved the Grand Canyon. They'll be able to closely study the mile-high walls and layered rocks that reveal the geological history of this national...