It must be stressed that within each of these bioregions there certainly exist a variety of localized habitats (e.g., reef, sand, mud), each with their own distinctive biota.
There certainly exist what are called perfect obligations.
There certainly exists a temporary and unsteady period before the ozonation system reaches steady state.
There certainly exist sequences that converge to ½ but where Sn(x)/n > ½ for all n (the sequence has the right mean but converges 'from above').
However, there certainly exist a number of cases with apparent unsymmetrical boundary constraints such as the case of stay cables with supplementary dampers and that of external tendons affected by intermediate diaphragms.
There certainly exists a widespread intuitive imagery associated with the duality that is sufficiently vivid to motivate heartfelt philosophical commitments, but, once approached directly, the distinction nevertheless proves extremely difficult to nail down.
There certainly exists a metaphysically possible world in which either Chirac was not a candidate in the 2002 French presidential elections or he was a candidate but he lost the election.
There certainly exist some instances of this kind (such as the stampede in Baghdad on August 25 , 2005 due to spreading rumors of an imminent suicide bombing in the crowd,123 or the stampede in a Chicago night club triggered by rumors of a poisonous gas attack).124 However, the hypothesis of a 'psychological state of panic' as reason of crowd disasters has been questioned many times [45, 46].
That said, there certainly exists a connection between the former Cuban leader and the Trudeau family.
Although there certainly exist irrational people of faith and atheists who think prayer is talking to an invisible friend, many more of us occupy a middle ground -- those who understand prayer as a way of participating in realities beyond the scope of mere rationality who, at the same time, understand reason as a reflection of divine beauty.
