A: Many management packs have dependencies on other management packs. An easy way to check is to download the MPViewer from the MSDN blog of Boris Yanushpolsky.

After you install it, select a management pack, and it will show full information including any dependencies (see screen shot below).

opsmgrmpdependencies
 

See FAQs on Windows, virtualization, systems management, and all things Microsoft, at John Savill's FAQs.