Most economists think that the rise in the demand for cash is caused by the rise of the underground economy and the use of U. S. currency as a medium of exchange. U. S. currency as a standard of value. U. S. currency as a store of value. U. S. currency as a form of international currency. U. S. currency as a unit of account.

Most economists think that the rise in the demand for cash is caused by the rise of the underground economy and the use of U.S. currency as a store of value.

Explanation:

The US dollar is the currency most used as an international monetary reference in the world, along with other currencies such as the Euro, the Yen, the Yuan and the British Pound, although all of these are used in a smaller proportion than the currency of the United States.

In many countries that do not have a strong local currency, or even in nations with stable but not internationally relevant currencies, citizens save in US dollars, because US dollars guarantee savings stability that other currencies, due to their volatility, cannot guarantee. Therefore, there is a large amount of cash that is outside the United States, in bank deposits or even domestic savings of millions of people around the world, which increases the demand for cash.

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.

where is the rest of the question. this isn't making sense. can you upload a picture of the question?