Breathing is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly to bring in oxygen and flush out carbon dioxide. The process of respiration, during which air is inhaled into the lungs through the mouth or nose due to muscle contraction and then exhaled due to muscle relaxation. Breathing, or "external respiration", brings air into the lungs where gas exchange takes place in the alveoli through diffusion. The body's circulatory system transports these gases to and from the cells, where "cellular respiration" takes place. The breathing of all vertebrates with lungs consists of repetitive cycles of inhalation and exhalation through a highly branched system of tubes or airways which lead from the nose to the alveoli.The number of respiratory cycles per minute is the breathing or respiratory rate, and is one of the four primary vital signs of life.
B, Davion because he went back an edited his paper
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A seen that sticks with me is a terrifying one: I suppose that is why it has stayed with me for so long. The scene is when Boxer the horse. One afternoon, a van comes to take Boxer away. It has “lettering on its side and a sly-looking man in a low-crowned bowler hat sitting on the driver’s seat.” The hopeful animals wish Boxer goodbye, but Benjamin breaks their revelry by reading the lettering on the side of the van: “Alfred Simmons, Horse Slaughterer and Glue Boiler, Willingdon. Dealer in Hides and Bone-Meal. Kennels Supplied” (123). The animals panic and try to get Boxer to escape. He tries to get out of the van, but he has grown too weak to break the door. The animals try to appeal to the horses drawing the van, but they do not understand the situation. When Boxer realizes what is going on, it is too late. That was such a betrayal of the most loyal and useful animal on the farm.
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