Practice, Question 12 occurs when there is a drop in a currency's value relative to other currencies or a fixed standard. Exchange rate 0 Payment deficit 0 Imbalance of payments Devaluation Practice, Question 15 The basic systems of communication, transportation and energy facilities are referred to as 0 industry sectors. 0 factors of production. 0 infrastructure. 0 commanding heights. Practice, Question 16 Which of the following is one area that has no international regulations? 0 the use and protection of water supplies 0 factory conditions 0 oil production 0 shipping Practice, Question 17 Taxes, surcharges and duties on foreign products are referred to as tariffs. 0 embargos. 0 import restrictions. quotas. Practice, Question 18 Which of the following is a limit on the amounts of particular products that can be imported? 0 embargo 0 exchange control 0 tariff quota