In 2007, the killer virus arrived in Hawaii, where almost all the queen bees used in the United States are bred. Bees are used in a third of the food we eat. Explain how a decline in the bee population affects the U. S. PPF.

The production possibilities frontier is the boundary between the combinations of goods and services that , given the available factors of production and the state of technology.

Explanation:

i hope this help you out finish the blank and you will be finished.

that would be the steamboat because none of the other things are forms of transportation