Before revision: The physiological density or real population density is the number of people per unit area of arable land.GEO 101 World Human Geography - Glossary A higher physiological density suggests that the available agricultural land is being used by more and may reach its output limit sooner than a country that has a lower physiological density.
After revision: The physiological density or real population density is the number of people per unit area of arable land.GEO 101 World Human Geography - Glossary A higher physiological density sduggests that the available agricultural land is being used by more and may reach its output limit sooner than a country that has a lower physiological density.