C
by using your cells to make copies of themselves
        
                    
             
        
        
        
This is the integumentary system which is also your skin system
        
             
        
        
        
The correct answer is (a.) a mutation of the hemoglobin allowing better oxygen-carrying capacity. The mutation of the hemoglobin that allows a better oxygen-carrying capacity would be the most beneficial to an elephant and its descendants. 
        
             
        
        
        
answer: 
photosynthesis converts energy into carbon dioxide and water into oxygen and glucose. glucose is used as food by the plant and oxygen is a by-product . cellular  respiration   energy into glucose into water and carbon dioxide 
water and  carbon dixode are by products and ATP is energy hat that is transformed from  
 
        
             
        
        
        
Answer:
The prokaryote divides by asexual mode of reproduction.
Explanation:
The concept of species which defines a species as a group of individuals of a population which can interbred and produce a fertile progeny is applicable to the organism which can reproduce sexually.
Since the bacteria divide through asexual means and not through sexual ways therefore the concept of defining a species becomes complicated and does not apply.However the concept of species in prokaryotes is still a topic of research.  
Thus, the biological concept of species is not applicable to prokaryotes.