  We present here an exploration on on the physical implications of the
Darwinian dynamics. We first show that how the nonequilibrium statistical
mechanics emerges naturally. We then show that the first three laws of the
thermodynamics, the Zeroth Law, the First Law and the Second Law can be
followed from the Darwinian dynamics, except the Third Law. The inability to
derive the Third Law indicates that the Darwinian dynamics belongs to the
"classical" domain. Specifically, the Second Law is proved from the dynamical
point of view. Two types of current dynamical equalities are explicitly
discussed in the paper: one is based on Feynman-Kac formula and one is a
generalization of the Einstein relation. Both are directly accessible to
experimental tests. Our demonstration indicates that the Darwinian dynamics is
logically a simple and straightforward starting point to get into
thermodynamics and is complementary to the conservative dynamics dominated in
physics.
