Water Pollution

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Across
  1. 5. an excess of nutrients.
  2. 6. all water sources above ground that is polluted.
  3. 7. naturally occurring form of water contamination.
  4. 8. Fertilizers and pesticides applied to crops can seep into the ground and contaminate groundwater.
Down
  1. 1. Improperly discarded waste in water sources for a long time.
  2. 2. consumption of oxygen supplies. some anaerobic microorganisms can produce ammonia, sulphides and other harmful toxins.
  3. 3. The second most prevalent kind of pollution after contaminated air.
  4. 4. The most common type of water pollution.