What does Opportunity Pressures and Competitive Pressures means?

What is the best way to combine these sentences?

Wealth is greater than health prove

Read the excerpt from "the blackfeet creation." how do readers know that this excerpt is from a myth? the excerpt describes an animal called a muskrat. the excerpt describes old man drying the mud. the excerpt describes old man scattering mud over water. the excerpt describes how muskrat create land.