摘要
A million years ago, the world was much colder than it is now. Large parts of North America lay under ice and snow. Ice covered parts of Europe, Asia, and South America. In places it was a mile deep! We call this time the"Ice Age". The Ice Age began long after the dinosaurs disappeared. It lasted thousands of years. It ended 10,000 years ago.
A million years ago, the world was much colder than it is now. Large parts of North America lay under ice and snow. Ice covered parts of Europe, Asia, and South America. In places it was a mile deep! We call this time the"Ice Age". The Ice Age began long after the dinosaurs disappeared. It lasted thousands of years. It ended 10,000 years ago.
