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.
Ear infections occur when a cold, throat infection, or allergy attack causes fluid to become trapped in the middle ear.Mostly affecting children, symptoms may include earaches and thick, yellow fluid coming from the ears. Select an Article.ar infections occur when a cold, throat infection, or allergy attack causes fluid to become trapped in the middle ear.