<em>Answer:</em>
Mutations in DNA that do not have an observable effect on the organism's phenotype.
<em>Method:</em>
Search Engine
 
        
             
        
        
        
Answer:
Living things
Explanation:
Living Things depend on OTHER LIVING THINGS and NON-LIVING THINGS to survive.
 
        
                    
             
        
        
        
A. because the heart will pump more blood filled with oxygen to the muscles that need it most
        
                    
             
        
        
        
D. Sensory neurons sense a stimulus.
C. Sensory neurons pass info about the stimulus.
B. Interneurons receive and process info about the stimulus. 
A. Motor neurons carry directions form interneurons to muscle cells 
I THINK!!!!!!!!!!!!!!!!