Across
- 2. the area of land where surface water drains when the ground is unable to absorb it
- 3. type of marine ecosystem that is often reliant on chemical energy and is independent of sunlight energy or photosynthesis producers
- 6. a process that occurs when less-dense surface water is drawn away from shore by currents and is drawn away from shore by currents and is replaces by cold, denser, more nutrient-rich water from below
- 9. a measure of how suitable water may be for drinking
- 13. a liquid that dissolves substances through solutes
- 16. cycling of water (H2O) on Earth through a variety of processes
- 17. the process of purifying or clarifying water to make it more potable
- 18. any substance above 7 on the pH scale
- 20. the area at the mouth of a river where its current meets the ocean; contains brackish (part fresh, part salt) water; acts as a marine habitat, buffer for pollutants, filter to remove run off pollution and breeding ground/nursery area for aquatic organisms
Down
- 1. oxygen found in a body of water; measurements may be used to indicate the degree of health of the water
- 4. underground rock layer that contains a vital source of water for human consumption and use
- 5. refers to the amount of contained within a solution
- 7. type of marine exosystem that relies on algae to act as producers and provide the majority of energy for the food chain; the majority of the worlds oxygen is produced in this ecosystem
- 8. all the water on or surrounding the surface of the planet (oceans, lakes, rivers, water in the atmosphere)
- 10. any substance below 7 on the pH scale
- 11. involves conserving and protecting something valuable, such as the plant, its ecosystems and natural resources
- 12. the area of land drained by a river and its branches
- 13. type of marine ecosystem that is controlled by movement of tides and contains a diverse array of well-adapted organisms due to the changing nature of the ecosystem
- 14. the scale that is used to identify acids and bases (ranges from 0-14); acids are below 7, bases are above 7, neutral is equal to 7
- 15. valuable water resource on earth; provides drinking water
- 19. cloudy or opaque; due to stirred up sediment or particles in water
