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.
1 Ear infection or inflammation causes fluid buildup in the middle ear. 2  A cold or other respiratory infection can lead to ear infections or inflammation.  Those at a higher risk for middle ear infections are children exposed to other children's colds (as often occurs in daycare centers), and babies who are bottlefed.