GRG 305 Study Guide - Quiz Guide: Soil Retrogression And Degradation, Maternal Death, Infant Mortality
Document Summary
Lecture- demography: one complication is the question of sustainability. The growth in agricultural output has been achieved by: A. clearing land with thin and fragile soils i. erosion is taking a heavy toll on the land. B. using chemical fertilizers and pesticides i. ii. iii. soil is losing its natural fertility pesticides are accumulating in soil and water pests are becoming resistant to pesticides. C. depending on very few species i. genetically identical so a single pathogen could wipe them out. Population continues to grow as scientific advances overcome constraints outlined in previous slide. Population stabilizes and food productivity is held constant or somewhat better than today. Serious population decline sets in as erosion, soil degradation, pests, toxic accumulations and climate change all take their toll on food supplies. Famine, war, and disease would run rampant (thomas malthus malthusianism) No, the world has more than enough resources if they are divided fairly .
