The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. ... Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification.
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.
Well, I know 4 is A and 5 is D.