2. A particular area of human activity and the people involved in it.
3. All that relates to or makes up someone's life.
Irrigation is the primary agricultural use of human waste in the developing world; however, frequently untreated human feces harvested from latrines is delivered to farms and spread as fertilizer.
Facing water shortages and escalating fertilizer costs, farmers in developing countries are using raw sewage to irrigate and fertilize nearly forty-nine million acres (20 million hectares) of cropland.
You make take advantage of the following flag units with a simple click:
Flags of the World, Part 1 (Afghanistan to Azerbaijan)
Flags of the World, Part 2 (Bahamas to Burundi)
Flags of the World, Part 3 (Cambodia to Czech Republic)
Flags of the World, Part 4 (Denmark to French Southern Territories)
Flags of the World, Part 5 (Gabon to Hungary)
Flags of the World, Part 6 (Iceland to Luxembourg)
Flags of the World, Part 7 (Macao City to Mynamar)
Flags of the World, Part 8 (Namibia to Nunavut, Canadian Territory
Flags of the World, Part 9 (Oman to Rwanda)
Flags of the World, Part 10 (Helena to Syria)
Flags of the World, Part 11 (Taiwan to Tuvalu)
Flags of the World, Part 12 (Uganda to Zimbabwe)
George B. Johnson; Washington University; St. Louis, Missouri; McGraw-Hill Higher Education, Second Edition; A Division of the McGraw Hill Companies; New York; 2000.