Across
- 5. careful management of a resource
- 7. increase of nutrients in an aquatic ecosystem
- 8. slow development or replacment of a community overtie
- 10. a regine of earth with a unique climate
- 11. an area of land covered in water for parts of a year
- 12. a biome with lots of grass and few trees
- 13. where a river flows into an ocean
Down
- 1. the varity of species that is in one area
- 2. anything that takes up space and has mass
- 3. the protection and wise use of a natural resource
- 4. the growth of humans around a city
- 6. the process by which matter slowly builds up in water
- 9. the ability to do work