Define about the Population Dynamics?

In this unit, we are going to study about human population who eventually suffer from these problems. Why do we want to study about human population? We want to study about this because we want to know what changes are taking place in human population. For example, what are trends in population growth? What changes are taking place in structure and composition of human population? As a public nutritionist, we want to know about these aspects because this would help us estimate various needs of population such as food and health case needs, plan programme strategies and work towards solving the nutrition problems. In this unit, we are going to study about all these aspects.