Across
- 3. Caused by the presence of suspended matter such as clay, silt, etc.
- 7. enter waterways from human and animal waste, phosphorus rich bedrock, laundry, cleaning, industrial effluents, and fertilizer runoff.
- 8. Occur naturally in the environment from soils and plants and in the intestines of humans and other warm-blooded animals.
- 9. Indicates the degree to which water is alkaline or acidic.
Down
- 1. Occurs naturally in mineral deposits, soils, seawater, freshwater systems, the atmosphere, and biota.
- 2. A molecule in the air necessary to most animal life, plants produce it as waste product
- 4. That part of the precipitation, snow melt, or irrigation water that appears in uncontrolled surface streams, rivers, drains or sewers.
- 5. A man made substance covering a natural landscape
- 6. Persipatation collecter