Aristarchus’s model not accepted because at that time it was believed that the earth was at the center of the universe.
<h3>What is Aristarchus’s model?</h3>
Aristarchus make a model by placing the place of the Sun in the middle of the solar system and placed the planets around the Sun.
So we can conclude that Aristarchus’s model not accepted because of the believed that the earth was at the center of the universe.
Learn more about model here: brainly.com/question/723406
The answer to the question is B - The lungs exhale carbon dioxide, which is a waste gas and needs to be removed from the body.