Read this excerpt from "The World on Turtle's Back."

These two brothers had creative powers, and with these powers they took clay and modeled it into animals. They used these animals to contend with one another. Each brother created a more powerful or more cunning animal than the next. They also created fruits, plants, and medicines for good and for evil. Finally, the right-handed twin made man. It is unknown whether or not the left-handed twin assisted in the creation of man. Man was the right-handed twin's favorite creation.

How does this support the idea that "The World on Turtle's Back" is a creation myth?