A notion in Heraclitus' metaphysics was... a. patterned change b. balanced opposition c. none of the above d. both a and b e. non-being is not

How does nafta affect relations between the united states and canada? a. it bans immigration between the two countries. b. it opens the borders between the two countries. c. it raises taxes on trade between the two countries. d. it allows free trade between the two countries.