What was the name of the supercontinent from which the plate tectonic theory originates?

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.

How does the use of fertilizers impact the environment?

In africa what do they call a crop grown for direct sale and not for use?