... 272xiv Economics of environmental conservationTables2.1 Production of combinations of ‘natural’ (environmental) output and wheat on two grades of land for two alternativeallocations of land: ... the satisfaction of human wants or desires. In orderto deal with the essential problem of economics, one has to take account of available resources and methods of production of commodities, theirexchange ... optimal level of conservation of the population of a species considered as a pure public good on the basis of itsexistence value 713.8 In the above case, the higher is the rate of interest used...