Level IV

Some articles on levels, level:

List Of Ecoregions In The United States (EPA)
... The classification system has four levels, but only Levels I and III are shown on this list ... Level I divides North America into 15 broad ecoregions of these, 12 lay partly or wholly within the United States ... Level III subdivides the continent into 182 smaller ecoregions of these, 104 lay partly or wholly with the United States ...
List Of Ecoregions In North America (CEC)
... The classification system has four levels ... Only the first three levels are shown on this list ... Level I divides North America into 15 broad ecoregions ...

Famous quotes containing the word level:

    It may be well to remember that the highest level of moral aspiration recorded in history was reached by a few ancient Jews—Micah, Isaiah, and the rest—who took no count whatever of what might not happen to them after death. It is not obvious to me why the same point should not by and by be reached by the Gentiles.
    Thomas Henry Huxley (1825–95)