Contour plowing, Pennsylvania, 1938. Contour bunding, Catalonia, 2007. Contour ploughing or contour farming or Contour bunding is the farming practice of plowing and/or planting across a slope following its elevation contour lines.
1 recurring middle ear infections.  Fluid in the ear may be accompanied by signs and symptoms of allergies or an upper respiratory infection including congestion, runny nose, post nasal drip, or watery eyes.
Water and bacteria entering the middle ear from the ear canal can cause inflammation and infection. Drainage from the ear is a sign of a perforation. Inflammation and infection in time can cause erosion of the ossicles and the walls of the middle and inner ear.