Man and his environment.
D000022:Abortion, Spontaneous; D003267:Contraception; D004467:Economics; D004782:Environmental Health; D005193:Family Planning Services; D005260:Female; D005298:Fertility; D005579:Fossil Fuels; D011158:Population Growth; D011247:Pregnancy; D014481:United States
D005579:Fossil Fuels