Under certain circumstances, however, it pays for a nation to import goods and services from abroad even though they could be produced more cheaply at home. This is referred to as _.

revenue tariff

Explanation:

I think this because the definition is a tariff imposed principally to raise government revenue rather than to protect domestic industries .A tax applied to imported and exported goods in order to increase the revenue of a regional or national government. An example of a revenue tariff in a business is the tax applied to all imported oil in the United States.  

the language of nature was a manifestation from god as he said "let there be light" and there was light the world began to assume visible, comprehensible form.

what ever we know now think of the old vision of creation we can be sure that with out the speaking of word -without language- we would have no science today with its striking power to illuminate the world.