Natures Elements

Across

1. Element used in blue pigments

2. Relating to the sea or ocean

3. Rapidly spreading uncontrolled forest blaze

6. Incoming stream or supply of liquid

7. Invisible gas rising from heated liquid

10. Tissue lining inside body cavities

14. Flow slowly in a thin stream

15. Dense group of bushes or trees

Down

4. Element making up most of the air

5. Slightly salty like coastal water

8. Northern lights seen in polar skies

9. Fine sediment deposited by flowing water

11. Animal casualty found on highways

12. Dig up something hidden underground

13. Relating to oceans rise and fall