What condition is considered normal in the United States?

Normal condition in a state is when the purpose of governance is achieved. When there is peace and citizen's need are met. When there is no strike by terrorist, a time when there is no pandemic taking the lives of the people. It can then be said to be normal.

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.