Across
- 3. Sand, sediments, plastic, Styrofoam or other solid inorganic agents.
- 6. Single identifiable source of air, water, thermal, noise or light pollution.
- 8. Main cause of water overuse
- 9. Manure, animal and plant products.
- 11. Precipitation that is unusually acidic
- 13. Affects the usefulness of a resource.
- 14. Groundwater
Down
- 1. A barrier constructed to hold back water and raise its level.
- 2. Waste matter such as faeces or dirty water from homes and factories.
- 4. Solvents,oils,salts,etc.
- 5. The action of purifying a liquid by a process of heating and cooling.
- 6. Bacteria, viruses and protists.
- 7. When runoff from rain and snowmelt carries pollutants into waterways.
- 10. The process of removing salt from seawater.
- 12. Large natural or artificial lake used as a source of water supply.