Overpopulation crisis.
D000830:Animals, Laboratory; D001519:Behavior; D003247:Conservation of Natural Resources; D003441:Crowding; D003710:Demography; D004777:Environment; D005843:Geography; D009026:Mortality; D011057:Politics; D011153:Population; D011156:Population Density; D011157:Population Dynamics; D011158:Population Growth; D012106:Research; D012919:Social Behavior; D012942:Social Sciences; D014857:Warfare
Animals, Laboratory; Behavior; Carrying Capacity; Clinical Research; Crowding; Demographic Factors; Demography; Environment; Geographic Factors; Literature Review; Mortality; Natural Resources; Political Factors; Population; Population Density; Population Dynamics; Population Growth; Population Pressure; Population Size--determinants; Population Theory; Research Methodology; Social Behavior; Social Sciences; Spatial Distribution; Violent Deaths; War; World