When a middle-school student is able to demonstrate that he/she is able to hear a string of digits (1, 2, 3, 4, etc.) and then repeat the string in reverse order, the child is indicating that he/she is developing:

working memory

Explanation:

When a middle-school student is able to demonstrate that he/she is able to hear a string of digits (1, 2, 3, 4, etc.) and then repeat the string in reverse order, the child is indicating that he/she is developing: working memory. In working memory, we can store information for a brief period of time. In working memory, the information is analyzed, classified and then stored. The average of digits that a normal adult can recall is 7 items.

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.