Across
- 2. places where animals and plants naturally live (page 14)
- 5. to judge one thing against another and notice differences and similarities (page 20)
- 6. belonging to a time before history was recorded in written form (page 8)
- 7. scientists who study fossils (page 10)
Down
- 1. a large group of animals that lived on land in prehistoric times (page 7)
- 3. one of seven large land masses on Earth (page 7)
- 4. the remains of animals and plants from millions of years ago (page 8)