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Watch carefully , and you can see the three-dimensional nature of many of the internal echoes - most probably water bodies and voids within the ice . Damage to the white matter of the brain does not result in a random expression of behaviors ; instead damage to the white matter severs connections between specific internal interconnections linking " boxes " producing a very specified behavior expression consistent with damage only that compartmentalized region . Only if the severity and location of the same motor-hindering brain injury also affects the internal interconnections between " boxes " of the brain specific to the facilitation of intellectual outcomes , and other non-affected white matter interconnections cannot compensate to recreate the output , might causality be determined ( 5 ) . An AS should advertise a minimal aggregate for its internal destinations with respect to the amount of address space that it is actually using . On the other hand , there are many streams that are " synchronous " transmitters , which transmit periodically based on their own internal timers ( e.g ., an audio senders that sends at a constant sampling rate ) . By pursuing a spectrum policy of increased access to unlicensed spectrum , the FCC not only solved their internal limitations to regulate all of the frequency bands , but they also positioned themselves as responsive to the requests from the wireless LAN manufacturers , such as WECA .