For the billion people.
D003247:Conservation of Natural Resources; D003710:Demography; D004467:Economics; D005523:Food Supply; D006301:Health Services Needs and Demand; D007390:International Agencies; D009938:Organizations; D011153:Population; D011157:Population Dynamics; D011158:Population Growth; D014480:United Nations
Demographic Factors; Desertification; Economic Factors; Environmental Degradation; Food Supply; International Agencies; Natural Resources; Needs; Organizations; Population; Population Dynamics; Population Growth; Un; World