The function D(t) represents the number of deaths in the colony as a function of time. In this case, it is modeled by the natural logarithm (ln) of t.
Related terms
Natural Logarithm: A mathematical function that gives you the exponent to which e (a mathematical constant approximately equal to 2.71828) must be raised to obtain a certain value.
Death Rate: The rate at which individuals within a population die or are removed from the group.
Decay Function: A mathematical model that describes how something decreases or decays over time.