The study behind the graphic for India, China, Brazil and the US showing income groups and percentages of total country income for each group highlights that how much of the differences in living standards can be explained by differences between countries:

The difference between the exports and imports of goods in a country is referred to as the

A) balance of payments. B) balance of trade. C) balance of power. D) exchange rate.

Kendra’s country is known for its fruit products, but before the fresh fruit can be made into candies, jams, and juices, a lot is lost due to pests, weather, and damage during shipping. Recently, however, researchers discovered a better way to transport the fruit that cut down on waste by 11 percent. This is an example of ______

a. an increase in productivity b. a rise in the standard of living c. sustained economic growth d. diminishing marginal returns