Description: OceanMOOC | 5.6 | Ocean Exploration and Sustainable Use of Marine Resources, Marine Resources | Biological Resources, Mineral Resources and Energy Resources| Dr. Krishnanand, Exploration for and exploitation of marine resources
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Marine: A Guided Tour of a Marine Expeditionary Unit is a 1996 book written by Tom Clancy about the inner workings of a Marine Expeditionary Unit .
Doom is a series of first-person shooter video games developed by id Software . The series focuses on the exploits of an unnamed space marine operating under the auspices of Union Aerospace Corporation (UAC), who fights hordes of demons and the undead in order to survive.
Doom is considered to be one of the pioneering first-person shooter games, introducing to IBM-compatible computers features such as 3D graphics , third dimension spatiality, networked multiplayer gameplay, and support for player-created modifications with the Doom WAD format. Since the release of Doom in 1993, the series has spawned numerous sequels, expansion packs, and a film .