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Use the figure to answer the following question.
Treehoppers (a type of insect) produce honeydew, which ants use for food. Treehoppers have a major predator, the jumping spider. Researchers hypothesized that the ants would protect the treehoppers from the spiders. During a one-year study, researchers found no difference in treehopper populations in any of their control and experimental groups. What could they measure during the second year to gain information about why this might have occurred?
Trade Restrictions
Measures implemented by a government to control or limit the import and/or export of goods and services, often to protect domestic industries.
Budget Deficit
The financial situation where a government's expenditures exceed its revenue over a specified period, leading to borrowing or the use of reserves.
Exchange Rates
The price of one currency expressed in terms of another, determining how much foreign currency can be obtained with a unit of domestic currency.
Transaction Categories
Transaction categories are classifications of financial transactions based on their nature, such as income, expenses, transfers, and investments, to help in managing finance.
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