All these levels are relatively fluid as development ebbs and flows. As the tide ebbs, water draining off the land may be concentrated into creeks. The popularity of boots as fashion footwear ebbs and flows. In some species, circulation is intermittent, and fluid ebbs and flows in the long-wise vessels. The music ebbs and flows with the elements depicted in the film. Group size ebbs and flows as unsuccessful males retreat and others arrive. The last chorus starts quite powerfully, but then ebbs away into a mystical silence. As a dive site, the location of "Mackenzie" experiences strong currents during large ebbs. She quizzes him on the problems in Darfur and Pratt's enthusiasm ebbs. As his life ebbs away, Irwin continues to raise the flag. Kentaro shocked by the events, fainted and fell asleep as his strength ebbs away. As a result, space fleets receive inadequate maintenance, and the level of civilization ebbs. Most technology is rejected and civilization ebbs. Distinction ebbs before a herd of vulgar "plebs"! Playing alongside Connan were Ross Walker (upright acoustic bass) and Seamus Ebbs (drums).