Across
- 4. The number of people in a place
- 6. A huge piece of ice that stores freshwater
- 7. Water droplets that fall from clouds
- 8. Trash or chemicals that makes water dirty
- 9. Someone who uses science to design things
- 10. Most of Earth's water is ______ in the ocean
- 11. All of the living things on Earth
Down
- 1. Water that is NOT salty, humans need it
- 2. All of the liquid and ice water on Earth
- 3. Water in the spaces and cracks underground
- 5. A place that stores and collects freshwater