D) take in nutrients because endocytosis is the process when a cell takes in food
 
        
             
        
        
        
Answer:
fossil fuel doesnt need atmospheric carbon for burning
 
        
             
        
        
        
Answer:
Nephrons in birds, mammals, and reptiles are all extremely similar, more so than other structures in the bodies of different species, solidifying the relatedness through similarity.
Explanation:
Birds can be said to have "mammal-like" nephrons from the number of loops and overall structure of their kidneys, which, although they look very different, serve the same purpose and do it in largely the same way. Reptiles also have mammal-like nephrons, and it can be assumed that this evolutionary trait was kept because the specific structure of the nephrons is generally the most efficient.
 
        
             
        
        
        
Answer:
The light from the Sun powers the process of photosynthesis.
Hope it helps! 
 
        
                    
             
        
        
        
A complex chemistry is most related to maintaining a stable internal environment.