B An ecosystem because it is i dont know how to explain but i think is that one
Constellation is a form a pattern that resembles an animal, mythological character, or object
The correct answer is circular. Copernicus and other astronomers before him thought that celestial bodies followed a circular orbital path. Copernicus was a Polish astronomer that concluded that the sun is at rest near the center of the universe and the earth is revolving around it annually. This theory is called heliocentric.
cells are not the smallest unit of life because atoms are smaller than cells