Rita had annual echocardiograms to evaluate ongoing cardiac valve dysfunction. one year the technologist had difficulty getting proper images of the structures. the radiologist reading the tests referred rita to a pulmonary specialist, who arranged for a biopsy of the left lung by a thoracic surgeon. what is a thoracic surgeon?

Clara wrote the following hypothesis for an experiment about acidophilic bacteria. bacteria cells will stop dividing in a basic (alkaline) environment because of the high ph. which statement is the best way to restate the hypothesis so that it is more specific? growing acidophilic bacteria in some environments will cause the cells to stop dividing because of ph. if the ph of their environment is changed, acidophilic bacterial cell division will be affected. if the environment of acidophilic bacterial cells becomes alkaline, the bacteria will stop dividing. the more alkaline an environment, the less cell division will occur in bacteria.