Across
- 1. The natural home or environment of an animal or plant
- 5. A body of water smaller than a lake, often man-made
- 7. What is the process by which plants make their own food using sunlight
- 8. This gas is essential for humans to breathe
- 9. The largest land animal on Earth
Down
- 1. Animals that eat only plants
- 2. The layer of gases surrounding the Earth
- 3. Trees lose this during autumn
- 4. The force that pulls objects towards the Earth
- 6. The star at the center of our solar system