Which best describes dynamic equilibrium

Equilibrium is best describe by a reaction. Equilibrium exists for a reaction when as time goes to infinity there will be no change in the system at that certain conditions. There are two types of equilibrium : dynamic equilibrium and static equilibrium. Static equilibrium happens when all particles are at rest or has no movement. This can also be termed as a steady-state system. On the other hand, dynamic equilibrium happens when the forward reaction rate is equal to the backward reaction rate. In short, dynamic equilibrium is a reversible reaction while static equilibrium is an irreversible reaction. 

D. china is one of the most active places, which could quite possibly mean more agriculture will happen.. and more war machi-    best of luck comrade.