What did people previously believe about the movements of Sun and Earth?

One camp thought that the planets orbited around the Sun, but Aristotle, whose ideas prevailed, believed that the planets and the Sun orbited Earth. In 1515, a Polish priest named Nicolaus Copernicus proposed that the Earth was a planet like Venus or Saturn, and that all planets circled the Sun.

Explanation:

They thought of the geocentric theory, or that the earth was the center of the universe

Explanation:

they deliver oxygen to the blood

equal distribution i think.