The term was then exported with Prussian officers and nobles to Russia. The Feldsher system of rural primary care provided some of the inspiration for China's barefoot doctors. Today feldshers can be found in every medical setting from primary to intensive care. They are often the first point of contact with health professionals for people in rural areas.
1 The prospect of a food chain minus its apex predators may mean the end of the line for many more species. 2  Sharks have widespread global distribution, are highly migratory and play a vital role in maintaining the health of ocean ecosystems.
As apex (top of the line) predators, great whites are too mighty to exist in large numbers, as the food chain would not be able to support them. It happens that shark attack victims are most often white males between the ages of 18 and 25, and most shark attacks occur in less than 5 feet of water. The reason for this has purely to do with numbers: Shallow water is where people generally are, and most of them are young adult males.