The global food supply.
D000383:Agriculture; D000818:Animals; D000829:Animals, Domestic; D001290:Attitude; D001723:Birth Rate; D001947:Breeding; D003906:Developing Countries; D002523:Edible Grain; D005060:Europe; D005523:Food Supply; D008722:Methods; D010679:Philippines; D010945:Plants, Edible; D011155:Population Control; D011158:Population Growth; D013672:Technology; D014481:United States; D014867:Water
D014867:Water