Answer:
They are all called bacterium. Which is the scientific word for bacteria. This is just what all bacteria is called. But there are 5 types of bacteria.
 
        
             
        
        
        
I think the answer you are looking for is peer review.
        
             
        
        
        
Answer:
C. development of vascular tissue for bulk flow
Explanation:
 
        
             
        
        
        
There were two approaches for the planetary paths. The idea about the planets revolving around the Earth, the planetary paths were plotted and were erratic. It was not relevant to the laws of motion and gravity. That fact was neglected by the believers in an Earth-centered Solar System. 
Sun-centered Solar System was theorized by Copernicus. The paths assumed to be relatively circular (or elliptical).