Basic logistic growth

Humans were once the prey of many predators. In this insight, the human death rate is exclusively due to predators and proportional thereto. Predators death rate is exclusively due to famine and humans are their only food. The results is a robust population balance.

kaka PVA with predator control considered for reporductive and survival rates

This is a tandem modified Lotke-Voltera model for a Human/Disease/Nature system. Biocapacity model (land model) replaces exponential growth. Humans with Technology eradicate Disease.