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.
The middle ear is an air-fluid space in the ear. If for some reason, may it be due to infection, inflammation or Eustachian tube dysfunction, the fluid increases in the middle ear, this would then result to pulsating in ear. Treating it with antibiotics, decongestants and nasal steroid sprays will relieve the patient.