Across
- 1. removal of dissolved materials from soil by water moving downwards
- 3. (Formation: secondary pollutant, NO2+UV=NO+O O+O2=O3, with VOCs)
- 4. rapid algal growth caused by an excess of N & P
- 7. symbiotic relationship where both partners benefit
- 10. caused by sulfuric and nitric acids resulting in lowered pH of surface waters
- 11. large distinct terrestrial region having similar climate, soil, plants & animals
- 12. deposit of leached material in lower soil layers
- 14. rock that contains a large enough concentration of a mineral making it profitable to mine
Down
- 2. decomposers covert organic waste into ammonia
- 5. allows the use of resources in a responsible manner
- 6. formed by chemical reactions involving sunlight (NO, VOC,O)
- 8. perfect agricultural soil with equal portions of sand, silt, clay
- 9. rule of 70 70 divided by the percent growth rate
- 13. setting aside areas & protecting them from human activities