Eutrophication A. results in an increased oxygen content os a river, lake , or other body of water. B. initially decreases the content of photosynthetic microorganisms in a body of water. C. kills off the existing bacteria in a body of water. D. results in a period of high level aerobic bacterial decomposition of organic matter. E. results in all of the above

Define the apical impulse and describe its normal location, size, and duration. which abnormal conditions may affect the location of the apical impulse? explain the mechanism producing normal first and second heart sounds. describe the effect of respiration on the heart sounds. describe the characteristics of the first heart sound and its intensity at the apex of the heart and at the base. describe the characteristics of the second heart sound and its intensity at the apex of the heart and at the base.