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.
Last updated: , see all updates. Part of: Import and export procedures, Import and export and Business tax. Rules to establish the country of origin of imported and exported goods and to help identify those which qualify for lower or nil customs duty.ome goods imported from or exported to certain countries will qualify for preferential treatment-eg lower or nil customs duty, whereas others will have non-preferential status and attract full excise.