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Consider the following mechanism for the destruction of ozone.
O3 + NO NO2 + O2
NO2 + O NO + O2
What is the catalyst in this reaction?
Imports
Goods and services bought by people in one country that are produced in other countries.
Balance
The term can refer to the difference between the sum of all credits and debits in an account, or equilibrium in supply and demand in a market.
Payments
The transfer of money from one party to another in exchange for goods, services, or to fulfill a legal obligation.
Trade Balance
The difference in value between a country's imports and its exports over a certain period, indicating the balance of trade.
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