The seed improvements that took place in the '70s and '80s that were termed the green revolution — that didn't take place for African ecosystems and they have the greatest variety of crops where sorghum, chickpea, millet, cassava.

发生在 70 年代和 80 年代的种子改良被称为绿色革命——这并没有发生在非洲生态系统中， 它们拥有种类最多的作物，其中有高粱、鹰嘴豆、小米、木薯。