Answer:
The answer is D.
They all live in or on a living organism. 
Explanation:
These bacteria are special since they live in some of the most harsh habitats such as extreme. The majority are important decomposers.
Hope this helps you!
 
        
             
        
        
        
Answer:
The Northern Hemisphere refers to the half of the planet that is north of the equator, while the Southern Hemisphere is all of the planet south of the equator. ... The North Pole, of course, is in the Northern Hemisphere, while the South Pole is at the most southerly part of the Southern Hemisphere.Apr 2