ENV200H1 Lecture Notes - Lecture 4: Thomas Robert Malthus, Carrying Capacity, Infant Mortality

• School: UTSG
• Department: School of Environment
• Course: ENV200H1
• Professor: Karen Ing

Document Summary

Populaions change by growth rate = (birth rate + immigraion) (death rate + emigraion) Currently, there is exponenial populaion growth ( j shaped on a graph) Env resistance: unfavourable env condiions prevening reproducion at bioic potenial, naturally controlling popl size. Thomas malthus hypothesized human popl would be kept in check, due to rapid urbanizaion & industrializaion (briish economist 1766-1834) Currently declining world popl, projected to be 0 popl growth (births = deaths) by 21st century (~7. 7-10. 6 billion as proposed by un) Demographics: study of popl in various countries. Shortest life expectancies: gross naional income (gni) o purchasing power parity (ppp) Demographic transiion: country moving from high low birth & death rates.