Which was the greatest challenge for both american settlers and american indians in the west in the mid-1800s?
a. the exposure to harsh weather
b. the threat of deadly diseases
c. the danger of crossing difficult terrain
d. the problem of fenced-off land

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.