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.
If the auditory tube becomes clogged, fluid will become trapped in the middle ear space. This fluid is called an effusion by your healthcare providers. In addition to ear infections, the common cold and allergies can often lead to fluid in the ear.