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.
For some children, the fluid clears in about a month. And a few children still have fluid buildup (effusion) several months after an ear infection clears. This fluid buildup in the ear is called otitis media with effusion.Hearing problems can result, because the fluid affects how the middle ear works.Usually, infection does not occur. Otitis media with fluid buildup (effusion) may occur even if a child has not had an obvious ear infection or upper respiratory infection.hen this happens, fever and pain usually go away and the infection clears. The eardrum usually heals on its own, often in just a couple of weeks. Sometimes complications, such as an ear infection with chronic drainage, can occur with repeat ear infections.