What is the third step of a scientific poll?

According to the graph above, in which location(s) do at least half of people practice christianity? a. zimbabwe only b. nigeria and mali only c. zimbabwe and south africa only d. zimbabwe, nigeria, and south africa only

Which group of islands is called the land of fire and is located at the southern tip of south america

What are the most populous and least areas of russia and why are some areas more heavily populated than others