Symbiosis describes close interactions between two or more different species. There are four main types of symbiotic relationships: mutualism, commensalism, parasitism and competition. Symbiotic relationships are important because they are a major driving force of evolution.
Border Security. Exporters. Definition. For C-TPAT purposes, an exporter is defined as: A person or company who, as the principal party in interest in the export transaction, has the power and responsibility for determining and controlling the sending of the items out of the United States.
U.S. exports are goods and services made in the United States that are sold to people or businesses in other countries. Goods and services from other countries that U.S. citizens or firms purchase are imports for the United States. Like almost all of the other nations of the world, the United States has seen a rapid increase in both its imports and exports over the last several decades.