A researcher observes children, logically thinks about his observations, and produces a theory. He is using

In 2015, corporation income taxes account for what percentage of the federal government's revenues?

a) 40% b) 25% c) 12% d) More than all other revenue sources combined

All riparian countries have equal rights, claims, and access to river water and those rights are enforced

Indicate whether this statement is true or false.