In early years human population and population growth has not been an issue. This is because of the variety of different environmental factors. Sickness and disease has played a large role in keeping human population under control since the beginning of time. It seemed that when a population would get over crowded an epidemic such as, the influenza or small pox would break out. This would drastically decrease the population enough that it would be under control again. Famine is another great controller of population. When a famine strikes an a ....