 In these circumstances, the funder can purchase the debt at well below its face value.In a commercial debt-for-nature swap or three-party debt-for-nature swap, a non-governmental organization (NGO) acts as the funder/donor and purchases debt titles from commercial banks on the secondary market.Since e late 1980s, organizations such as Conservation International, The Nature Conservancy, and the World Wildlife Fund have participated in international debt-for-nature swaps.