How is slash-and-burn horticulture a sustainable adaption in the tropics?
-very ancient way of dealing with erosion and leeching, involves cutting down area of forest and burning
it, ashes provide nutrients for soil so that crops can be planted
-lots of land so technique was sustainable, more land available to cultivate
-you allow everything to grow after cultivating and cultivate in another area
Is industrial agriculture a more efficient method of food production than non-industrial systems?
-more energy output, less caloric return
-in terms of human energy, industrial is more efficient, less labour intensive, but more energy is put into