Using the chart, identify an example of absolute advantage for the united states over either country a or country b. be sure to identify the product and the country. explain how the availability and use of a natural resource may impact advantage.

Ascientist is designing an investigation to study the impact of invasive bird populations on local, native bird populations at backyard bird feeders. what population is most likely to be a control group for the investigation? amount of food number of bird feeders invasive bird populations local backyard birdfeeders without food