Aidan

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