Troubled Waters

2. - Substances that make something impure.
5. cycle - The cycle through which water in the hydrosphere moves.
6. ponds - Basins that hold water and allow infused particles to settle.
8. - Obtain exclusive possession or control of (a trade, commodity, or service).
9. - Layers of permeable rock or sand that hold water.
11. - As clean and fresh as in its original condition; unspoiled.
13. - Relating to the business of running an organization, or government.
15. - A salt or ester of nitric acid.
17. away - Consuming, eating away (little by little) and depleting over time.
19. species - Non-native species that spread rapidly and cause harm to the environment.
21. - Draw off or transfer over a period of time, especially illegally or unfairly.
23. - Secondary products made in the manufacture or synthesis of something else.
24. - Animal dung used for fertilizing land.
26. - Found along the banks of a river and other sources of water.

1. - Substances that are added to soil to help the growth of plants.
3. - Official notices that give information or warnings.
4. - The process of something becoming worse in condition.
7. - Made impure by exposure to or addition of a poisonous or polluting substance.
8. arsenic, lead, cadmium - Heavy metals that are toxic.
10. habitats - Areas adjacent to rivers and streams with a dense growth of vegetation.
12. - Able to be maintained at a certain rate or level.
14. - Water that “runs off” (drains away) from an area of land.
16. - A colorless gas with a characteristic pungent smell.
18. - Having a thick, sticky consistency.
20. - A black viscous mixture of hydrocarbons.
22. - With small pits or scars.
25. - Contaminated or polluted.