This Demonstration depicts processes or chemical reactions starting at a measurable initial concentration,

. The process or reaction is governed by two competing mechanisms, one of growth or generation and the other of mortality or degradation. The concentration,

, is the product of the growth component,

, representing the system's potential for uninhibited growth, and a decay factor,

,

, which represents the decay component. Each has a characteristic time scale,

and

, and "rate parameter",

and

, whose values along with

can be modified using sliders. The Demonstration plots the functions

and

together in blue and the corresponding

in dark red. The maxima of the

,

, and

axes can also be adjusted with sliders. The equations for

,

, and

appear above the plots.