This document describes the natural ecosystem of a river, including animals like snakes, frogs, birds, fish and ducks, as well as plants like grass, flowers and trees. The river contains water and flows under a bridge, surrounded by the sky.

1. THE RIVER

2. SNAKE

3. FROG

4. BIRD

5. MOSQUITO

6. FLY

7. W
O
R
M

8. FISH

9. DUCK

10. WATER

11. GRASS

12. PLANTS

13. FLOWERS

14. TREES

15. SKY

16. BRIDGE