Chapter 5, Problem 7CR

To determine

The definition of population and population size. The reason for the existence of the most population in clumps. The four variables that govern the changes in population size. An equation to show the interaction of these variables. The concept of the age structure of a population. The name of three major age groups. The definition of the range of tolerance. The definition of limiting factor with an example. The definition of population density and the importance of some limiting factors when the density of population increases.