This book is set-up in a question and answer format. The questions range from, do whales have teeth? To, why are sea mammals in danger? The book has 42 questions that are all answered with factual information. There are also some facts buried within these questions on several different pages of the book. This book is part of a series 8 book series about other animals that have inhabited the Earth.
Looks at men and women whose discoveries and achievements have changed the world-- Charts, diagrams and archival photographs provide detailed historical facts.