... world around us. ECONOMICS OF THE ENVIRONMENT 1 Models, Systems, and Dynamics2 Property Rights3 Economics of Pollution ControlPART ONE The Economics of the Environment and Natural Resources R. ... dynamics of bears is to understand the relationshipsbetween bears and their prey, then the model given above is useless. If, however, ECONOMICS OF THE ENVIRONMENT AND NATURAL RESOURCES THE MODELS, ... leave in, and what to leave out of a model, requires a good understanding of both the processes being mod-eled and the purpose of the model. For instance, if the purpose of the model of the population...