<classify> Subsistence kuayɛ nyɛ den, mpɛn pii no ɛyɛ organic, sistɛm a wɔde di dwuma no boa aba no wɔ ecoregion a wɔaka ɛne crop rotation abom anaasɛ tɛkniks a ɛnyɛ den ma nnɔbae no baa bebree.  <topic>: sciencetechnology 