Disk defragmentation realigns separated data so that related file pieces are unified. <span> Defragmentation is is the process of consolidating fragmented files on the user's hard drive.</span>This Microsoft Windows utility includes <span>rearranging the fragments and restoring them into fewer fragments or into the whole file.
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Fish-eye because this is how you would see through a "fish eye" point of view in a rounded tank that is commonly used.
May I please have brainliest
