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What is a compass? how does it work

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

Canada plays an important role in the global community in all of the following ways except by a. acting as a superpower with influence over europe and asia. b. promoting arms control and disarmament. c. working with the commonwealth of nations to promote trade. d. promoting trade with japan and other asian countries.