Great Lakes freighter enters the Lake Erie terminus of the Welland Ship Canal The St. Lawrence Seaway is important to the U. S. and Canadian economy. What advantage has the St. Lawrence Seaway had on trade?

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design

Why do you think that historians use the word “revolution” to describe important changes in agriculture? how did the green revolution and other agricultural revolutions change the lives of billions of people? < < read less

Using the drop-down menus, choose the correct word or phrase to correctly complete each sentence. the supreme court ruled in favor of the government used by preventing the new york times from printing the documents. the main result of the case was to