Across
- 3. a barrier constructed to hold back water and raise its level, forming a reservoir used to generate electricity or as a water supply.
- 8. any water that has been affected by human use.
- 13. fresh water on Earth’s land surface
- 14. the ability of rock or soil to allow water to flow through
- 16. pollution coming from several sources
- 18. the percentage of the total volume of a rock that has spaces(pores)
- 19. pollution coming from one source
- 20. safe to drink; drinkable.
Down
- 1. a bacterium, virus, or other microorganism that can cause disease.
- 2. The buildup of pollutants at higher levels of the food chain.
- 4. is caused by humans. A natural process when lakes and streams contain an abundance of nutrients.
- 5. streams and rivers that move across land and form a network of water
- 6. a large natural or artificial lake used as a source of water supply.
- 7. zone an area of the Earth’s surface from which water percolates down into an aquifer
- 9. the area of land that is drained by a river
- 10. Thermal pollution happens when the body of water, such as a lake or stream, increase. Can kill fish.
- 11. an underground formation that contains groundwater
- 12. a process that takes away mineral components from saline water.
- 15. the pollution of bodies of water, such as lakes, rivers, seas, the oceans, as well as groundwater.
- 17. water beneath the Earth’s surface in sediment and rock formations