Each year, the US imports billions of barrels of oil from other countries. At the same time, the US exports billions of dollars worth of agricultural products to other countries. How is this situation an example of economic
interdependence?

Well you are giving something worth billions then you get something worth billions so we are not loosing or gaining money.

And the definition of economic interdependence is written below

An economic interdependence is a condition that exists when two or more persons, organizations, regions or countries exchange goods and services with the purpose of filling each other multiple needs