for instance in humans, the somatic cells include 46 chromosomes which is the diploid wide variety (2n) and each sperm and egg has 23 chromosomes wherein one of them is the sex chromosome.
 
        
             
        
        
        
Answer:
the main function of Krebs cycle is that it plays a big role in the process of energy production and biosynthesis. 
 
        
             
        
        
        
This can be identified as a population. In a population, the organisms are the same species and they have to live in the same area. For example, the population of cities are the head count of the species of human in that one area.