精选优质文档-倾情为你奉上生态环保类A(2018河北邯郸高三质检)To fight for the conservation of forest ecosystem, several ecologists including Daniel Janzen convinced Del Oro, an orange juice producer, to donate part of his forestland to a national park. In return, Del Oro was allowed to throw large amounts of waste in the form of orange peels(皮) on a 3hectare piece of land within the national park at no cost. Dealing with tons of leftover peels usually involved burning them or paying to have them poured into a l
