electronic health record (EHR) a computerized repository for a patient's health information providing information to members of the health care team regarding a clinical encounter. Many systems can also provide decision support, quality assurance information and outcome data. Mosby's Medical Dictionary, 9th edition.
An ecosystem is a natural unit of plants, animals, and microorganisms functioning together with all non-living environmental factors. To conserve this delicate balance, it is important to know what part each piece of the natural ecosystem does for all the others.Preserving any bionetwork can be very difficult, because it is almost impossible to know what each element of the ecological unit adds to the equation.o conserve this delicate balance, it is important to know what part each piece of the natural ecosystem does for all the others. Preserving any bionetwork can be very difficult, because it is almost impossible to know what each element of the ecological unit adds to the equation.
Another important thing to remember is that nothing stays stable forever. An ecosystem that is stable and has been stable for many years (or centuries) may lose its stability if, for instance, the climate changes, or if certain kinds of disasters strike which alter so many things that the ecosystem is destabilized.So stable doesn't' mean permanent, either.e do this on a larger scale for the whole ecosystem. If we can observe the ecosystem for a series of years, and things stay roughly the same (always remembering those ups and downs, and all of the unique things we're ignoring), we can safely say that we are studying a stable ecosystem.