1.) Who has a higher ranking: the jackals or the grunts? 2.) When did the elites and the prophets meet? Human years 3.) Did all of the covanate go to the ark? Or was there still a ton left at Earth? 4.)Why haven't the flood on other installations built a new gravemind? 5.) How is a Gravemind made? 6.)Where is the Forerunner homeworld?