Identify two elements of dependence from the Diagnosis of Substance Use Disorders: Diagnostic Criteria article and explain how these two elements can lead to psychosocial or environmental problems. Also, respond to two posts providing an example of psychosocial or environmental problem associated with an element of dependence identified by two classmates.

"choosing is refusing" means individuals face an opportunity cost with each decision they make. economists state that every decision involves trade-offs. opportunity cost is the least desirable alternative given up as a result of a decision.

this statement is true.

forests are public goods, available for everybody. when usage of such a good becomes interesting for consumers and its usage increases, there can be a risk of overexploitation. it is a non rival good therefore, if one person consumes the good it does not reduce the availability for subsequent consumers.

these caracteristics require the establishment of measures in order to prevent the destruction of a commonly owned space, for example, to restrict the amount of people that have access to the same time.

answer; a cost benefit analysis;