The document defines and describes different ecosystems including deserts, mountains, and prairies. It notes that deserts receive less than 25cm of rainfall per year and have diverse landscapes and plant and animal life adapted to the dry conditions. Mountains provide different elevation zones that support various plant and animal species. Prairies are grasslands that experience wide temperature variations and support species like bison and prairie dogs.

1. Ecosystems

4. West Texas desert Oasis in the desert

5. Sahara desert Arizona desert

6. Plants in the desert

7. Animals in the desert rattlesnakes roadrunners

8. Desert tortoise Red tailed hawk

11. Mountain Plants Moss Mountain wildflowers

12. Fur tree Spruce tree

13. Mountain Animals Grizzly bear Big horn sheep

16. Prairie Plants Butterfly weed Prairie grass with coneflower

17. Prairie Animals Bison Prairie dog