Answer:
 light energy, water, carbon dioxide and chlorophyll
 
        
                    
             
        
        
        
Answer:
B. Black Squirrels have a survival advantage over gray squirrels
Explanation:
Using the information provided, it can be inferred that there is a difference between how many Gray squirrels and how many Black squirrels are being naturally selected. 
This means:
Black squirrels have an advantage that reduces the amount of squirrels being selected from their environment.
Hope this helps!
 
        
                    
             
        
        
        
Answer:
Viruses rely on the cells of other organisms to survive and reproduce, because they can't capture or store energy themselves