Protective equipment is very helpful when playing sports because it minimizes the chance of getting hurt. With the protection you could still get hurt. One example of protective equipment is a helmet, it protects your head for the most part but you could still get a concussion even while wearing the helmet, but it prevents you from breaking your skull. so you would rather end up with a possible concussion instead by wearing the helmet
Chronic Obstructive Pulmonary Disease or COPD is an inflammatory disease of the lung causing obstructed flowing of air. This includes Emphysema and Chronic Bronchitis. The main cause of this disease is long exposure to things damaging the lungs such as cigarette smoking thus the 65 years old patient has this and has symptoms such as frequent, productive cough of thick, pale yellow mucous and cyanosis.
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if its a test try to just do it on your own ,you got nothing to lose from a test, its just to understand what you know on the concepts, but if you would still like answers just search around the net or here and you can always post the questions to ask people for help.
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