Answer:
I guess it is C.
Explanation:
Because a gene is the basic unit of heredity that determines a offspring's characteristic, my guess is that the answer is C
(Hope this helped!)
 
        
             
        
        
        
Answer:
A, the sun.
Explanation:
The sun powers the water cycle and many others.
 
        
             
        
        
        
C.) depend on the same resources
Competition is the rivalry between living things for territory, resources, goods, mates, etc. It is a symbiotic relationship that occurs in nature. Same or different members of species compete for resources, especially for limited natural resources.