Certified Postanesthesia nurse (CPAN) a postanesthesia nurse who has been certified by the American Board of Postanesthesia Nursing Certification. charge nurse a registered nurse responsible for the management of a patient care unit. circulating nurse a nurse member of the surgical team, responsible for activities of the operating room outside the sterile field and for managing nursing care of the surgical patient in the room.
Sea water covers 97% of the earth surface, while fresh water just 3% - an imbalance which makes drinkable water a precious resource. Sea water contains a great amount of salt up to 3.5 %, while fresh water has only a concentration of 0.5% salt. The increased salt level determines a higher density for sea water and a decreased freezing point, while fresh water has a lower density and a normal freezing point.
Quora. Dec 2016 about 71 percent of the earth's surface is water covered, and oceans hold 96. Water also exists in the air as water vapor, rivers and lakes, icecaps glaciers, ground soil moisture aquifers, even you your dog. Googleusercontent search. Over 68 percent of the fresh water on earth is found in icecaps and glaciers, just over 30 ground. The water in the world (pdf) united states environmental facts worldwide weighing earth's from space feature articles.