Earth Facts
- 160 pages
- 6 hours of reading
• How do mountains form? • Where is the deepest trench on Earth? • Why do volcanoes erupt? The answers to these questions and many more are packed within the pages of Pockets: Earth Facts .

• How do mountains form? • Where is the deepest trench on Earth? • Why do volcanoes erupt? The answers to these questions and many more are packed within the pages of Pockets: Earth Facts .