Final answer:
Slash-and-burn agriculture is a method of farming practiced in rainforest areas, where trees are burned off and crops are planted in the nutrient-rich soil. However, this method only provides fertility for a few years before the soil becomes infertile again. It is characterized by minimal labor requirements.
Step-by-step explanation:
Slash-and-burn agriculture is a method of farming where trees are burned off, and crops are planted until the soil becomes infertile. This method is practiced in rainforest areas where soils are leached by excessive rainfall, causing soil nutrient depletion. Farmers cut down patches of forest, burn the vegetation, and use the ashes as fertilizer. However, after a few years, the soil becomes infertile again, requiring farmers to move to a nearby field and repeat the process. Slash-and-burn agriculture is a land extensive farming system characterized by minimal labor requirements.