  In the paper we consider the Nonsymmetric Kaluza-Klein(Jordan-Thiry) Theory
and hierarchy of a symmetry breaking within Grand Unified Theories.In this way
we try to construct Unified Field Theory.We conside alsoa quintessence and
skewon fields as possible Dark Matter particles.Both particles are massive with
zero and one spin.It means with scalar and pseudovector particles.They are
interacting only gravitationally..They are really apart of gravity.In this way
they are geometrized.We find anatural to get a cosmological constant(Dark
Energy) and the fith force. We consider also an effective gravitational"
constant" Geff and a test particles movement in the theory.We consider also a
tower of scalar (massive) fields as additional Dark Matter derived in the
paper.
