The theory behind narrow row corn production is that yields of any crop will be maximized when plants are uniformly distributed across the field. To achieve this, the spacing between all plants between and within the rows must be equal. For an equidistant plant spacing with 30,000 plants per acre, both the row spacing and distance between plants within the row would be 17.4 inches. In a 15-inch row system, plants would be 13.9 inches apart in the rows.
Swallowed air. Aerophagia, or air swallowing, is a common cause of gas in the stomach. Everyone swallows small amounts of air when eating and drinking. However, eating or drinking rapidly, chewing gum, smoking, or wearing loose dentures can cause some people to take in more air. Burping, or belching, is the way most swallowed air - which contains nitrogen, oxygen, and carbon dioxide - leaves the stomach.
Inhalation- Air is breathed in through the nose or mouth. It then travels down the trachea, to the lungs (via the bronchi). When it gets to the alveoli, oxygen is put in the oxygen poor blood and swapped for carbon dioxide. Exhalation- Carbon dioxide is pushed out of your body through the nose or mouth when your diaphragm contracts. At the site of the alveoli, the oxygen goes into the oxygen poor blood that is coming from all over the body. The carbon dioxide is then forced out and breathed out.