Mange in Fox and Coyote. Sarcoptic mange is probably the biggest killer of red foxes and coyotes in New Jersey. It is a highly contagious disease and can be easily spread. It is caused by an infestation of Sarcoptes scabiei canis, a burrowing mite, causing intense itching from an allergic reaction to the mite and resulting in hair loss.
Chemically, the difference between the two is that hard water contains calcium and magnesium ions, while soft water does not. Soft water is easier to lather with than hard water is. Continue Reading.
Hard Water Definition. Hard water is water that contains high amounts of Ca 2+ and/or Mg 2+ . Sometimes Mn 2+ and other multivalent cations are included in the measure of hardness.Note water may contains minerals and yet not be considered hard, by this definition.ccording to the USGS, the hardness of water is determined based on the concentration of dissolved multivalent cations: 1  soft water - 0 to 60 mg/L (milligrams per liter) as calcium carbonate. 2  moderately hard water - 61 to 120 mg/L.