It also enables observations over large spatial extents. The extent items tracking these extents are stored in the root tree. The geographical extents of these waves vary. Materials can have varying extents of linearity, homogeneity and isotropy. These affected different regions at different times and to different extents. Its extent consists of those objects that are common to all extents of the set. Individuals embrace each ideology to widely varying extents. Files have "extent data items" to track the extents which hold their contents. The differences are also attributed to oceanic heat transfer and differing extents of greenhouse trapping. They emulated the tonal colour of classical "ragas" to varying extents. Child labour has existed to varying extents throughout history. Agents, to varying extents, need reinforcement. Modularity is achieved to various extents by different modularization approaches. Ghemawat emphasizes that different types of distance matter to different extents depending on the industry. Normally, PEs simply map one-to-one to logical extents (LEs).