Force A Grand Unified Theory that allows for the combination of the electroweak interaction with the strong force is held out as a possibility with candidate theories such as supersymmetry proposed to accommodate some of the outstanding unsolved problems in physics. Physicists are still attempting to develop self-consistent unification models that would combine all four fundamental interactions into a theory of everything. Einstein tried and failed at this endeavor, but currently the most popular approach to answering this question is string theory. What we now call gravity was not identified as a universal force until the work of Isaac Newton. Before
Unified neutral theory of biodiversity be more species than individuals. This formula is important because it allows a quick evaluation of the Unified Theory. It is not suitable for testing the theory. For this purpose, the approptiate likelihood function should be used. For the metacommunity this was given above. For the local community with dispersal limitation it is given by: Here, the formula_27 for formula_28 are coefficients fully determined by the data, being defined as This seemingly complicated formula involves Stirling numbers and Pochhammer symbols, but can be easily calculated. An example of a species abundance curve can be found in Scientific American. UNTB distinguishes