| A | B |
| free market | type of economy in which people are free to buy, produce, and sell with limited government involvement |
| profit | money a business earns after all its expenses are met |
| stock | part ownership in a company |
| biotechnology | study of cells to find ways of imporving health |
| newsprint | type of paper used for printing newspapers |
| trade deficit | occurs when the value of a country's imports is higher than the value of its exports |
| tariff | tax added to the price of goods that are imported |
| trade surplus | occurs when value of a country's exports is higher than the value of its imports |
| acid rain | chemicals from air pollution that combine with precipitation |
| brownfield | sites that have been abandoned and may contain dangerous chemicals |
| urban sprawl | spread of human settlement into natural areas |