Water Pollution

Edit Answers
1234567891011121314151617181920
Across
  1. 4. is the polluted form of water generated from rainwater runoff and human activities.
  2. 5. are a highly toxic product whose production was banned by United States federal law in 1978, and by the Stockholm Convention on Persistent Organic Pollutants in 2001.
  3. 8. also known as a septic tank drain field or leach drain, is an underground array of perforated pipes adjacent to the septic tank.
  4. 9. is a broad term that includes any form of precipitation with acidic components, such as sulfuric or nitric acid that fall to the ground from the atmosphere in wet or dry forms.
  5. 10. is the amount of dissolved oxygen (DO) needed (i.e. demanded) by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period.
  6. 11. refers to diffuse contamination of water or air that does not originate from a single discrete source.
  7. 14. is a man-made outdoor earthen basin filled with animal waste that undergoes anaerobic respiration as part of a system designed to manage and treat refuse created by concentrated animal feeding operations.
  8. 16. is a facultatively anaerobic, rod-shaped, gram-negative, non-sporulating bacterium.
  9. 18. is an underground chamber made of concrete, fiberglass, or plastic through which domestic wastewater flows for basic sewage treatment.
  10. 19. occurs when human water pollution speeds up the aging process by introducing sewage, detergents, fertilizers, and other nutrient sources into the ecosystem.
  11. 20. may also be referred to as an infectious agent, or simply a germ. The term pathogen came into use in the 1880s.
Down
  1. 1. the gradual increase in the concentration of phosphorus, nitrogen, and other plant nutrients in an aging aquatic ecosystem such as a lake.
  2. 2. are flame retardant chemicals found in household and industrial products.
  3. 3. When large populations of decomposing bacteria are converting these wastes it can deplete oxygen levels in the water.
  4. 6. is a single identifiable source of air, water, thermal, noise or light pollution.
  5. 7. is any deviation from the natural temperature in a habitat and can range from elevated temperatures associated with industrial cooling activities to discharges of cold water into streams below large impoundments.
  6. 12. is an organism whose presence, absence or abundance reflects a specific environmental condition.
  7. 13. is the contamination of water sources by substances which make the water unusable for drinking, cooking, cleaning, swimming, and other activities.
  8. 15. is a variation in temperature which causes tension in a material.
  9. 17. is the highest level of a contaminant that is allowed in drinking water based on cost benefit analysis and is enforceable.
  10. 18. is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, wastewater treatment or on-site sanitation systems.