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.
Normally, the Eustachian tube drains fluid from your ears to the back of your throat. If it becomes clogged, otitis media with effusion (OME) can occur. If you have OME, the middle part of your ear is filled with fluid. It can increase the risk of ear infections.