The St. Lawrence Seaway is important to the U. S. and Canadian economy. What advantage has the St. Lawrence Seaway had on trade? 1. reduction in the amount of pollution caused by U. S. and Canadian trading vessels

2. doubles the travel time of American goods shipped to Europe

3. creates a cheaper way to ship U. S. and Canadian products around the world

4. limits the amount of goods imported from China

Before they can be published, scientific papers must be peer-reviewed. this means that: a) some other scientific experts read the papers and guarantee that they are true.b) some other scientific experts read the papers and provide quality control by eliminating many mistakes.c) an editor reads the papers, to make sure that all the semicolons are in the correct places.d) everyone in the world is given the opportunity to comment on the papers through a specially maintainedblog.e) government bureaucrats read the papers, to be sure that the papers do not insult the political positions ofthe current officeholders.