Needs more info to answer question
Diaphragm separates the abdominal cavity from thoracic cavity... :)
i think this is right answer....
These question makes no sense
sorry xx
<span>A. Keynote address
In the Keynote address is most likely a world-famous surgeon would give his/her speech in order to motivate, inspire and challenge pursing scientists and medical professionals in their pursuit of their successful career and the like endeavors. </span>
