Overpopulation question is complex, scientist says.
D003247:Conservation of Natural Resources; D003710:Demography; D004777:Environment; D005069:Evaluation Studies as Topic; D011153:Population; D011156:Population Density; D011157:Population Dynamics; D011158:Population Growth
Carrying Capacity; Critique; Demographic Factors; Environment; Natural Resources; Overpopulation; Population; Population Dynamics; Population Growth; Population Size; World