Across
- 5. Water held beneath Earth’s surface.
- 6. Rain Precipitation containing acids that form in the atmosphere when industrial gas emissions and other pollutants combine with water.
- 9. (Base) Property of being a base. Substances with pH values between7-14.
- 10. Occurs when a fish pollution is being depleted faster than it can reproduce itself.
- 12. Spill The release of oil into the environment; a form of pollution maybe natural or due to human activity.
- 13. A stream that flows to a larger stream or other body of water
- 16. An underground rock formation where water collects.
- 17. Reef An artificial reef is a man-made, underwater structure.
- 19. source pollution Pollution that cannot be traced to a specific source
- 21. zone The area of land that allows water to replenish an aquifer
Down
- 1. The introduction of harmful substance or products into the environment, usually as a result of human activities.
- 2. Shed An area of land where all of the water drains into the same body of water
- 3. The removal of sediment from the bottom of a Sea or River.
- 4. water water that is above the Earth surface
- 6. Property of being acidic. Substances with PH values between 0-7
- 7. Organisms that float in the water and drift with the currents.
- 8. Measurements oh how acidic or basic a substance is.
- 11. system An underground treatment system for household sewage.
- 14. The process of dragging huge , heavy nets over the sea flow, scooping up everything in their path. Dredging / The removal of sediment from the bottom of a Sea or River.
- 15. Anything capable of causing disease.
- 18. The water flow that occurs when water from rain, snowmelt, or other sources flows over the land.
- 20. Salt water ecosystems and organisms