What are the two different methods for partitioning hard drives?

There are two primary methods of hard drive partitioning. The first method, employed in DOS, Microsoft Windows and Linux is Master Boot Record. The other method, used by more recent computers (after mid 2010) is the GUID Partition Table.

B.) nitrogen fixationnitrogen fixation is the process of nitrogen molecules seeping into the soil and inside plant roots and bacteria. it gives more "life" to plants