In Section 10.5, a method of mark and sweep garbage collection was described in which memory is split into two sections, only one of which is used for allocation between calls to the garbage...

In Section 10.5, a method of mark and sweep garbage collection was described in which memory is split into two sections, only one of which is used for allocation between calls to the garbage collector. It was claimed in the text that this eliminates the need for extra space to mark memory that has been seen. Describe how this can be accomplished.