1. Malthusian Population Theories
- Malthus argued that "Population grow at a rate that exceeds available food supply"
- Population can survive only because of positive checks on population growth. That is, in mortality due to famines, epidemics, wars and natural causes, preventive checks e.g. abstinence and contraception.
- Contemporary follower of the Malthus ideas
- They focus more on the health and mortality consequences of a changing environment e.g. Each argue that the impact on the environment is a function of population size, level of affluence and technology.