Across
- 5. the frozen water part of the Earth system
- 7. the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among the atmosphere, terrestrial, and marine ecosystems
- 8. Pottery Material
Down
- 1. The water cycle
- 2. an area of land that feeds all the water running under it and draining off of it into a body of water
- 3. the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth.
- 4. a scale used to specify how acidic or basic a water-based solution is.
- 6. Beach