They do not have external ears like us. but they do have ear holes located directly behind their eyes. frogs ear holes are covered with thin tympanic membranes or the eardrums that protect the inner ear cavity.
        
             
        
        
        
Answer:
The energy comes from electrons produced by oxidation of biological molecules.
Explanation: In photosynthesis, the energy comes from the light of the sun. 
Hope this helped! :)
 
        
             
        
        
        
Answer:
12. which is used to measure ocean depth the answers is C
Explanation:
 just because 
 
        
                    
             
        
        
        
Answer:
Cells organized into tissues
Explanation:
cells in complex multicellular organisms like people are organized into tissues, groups of similar cells that work together on a specific task
 
        
                    
             
        
        
        
Assuming it's only salt water, it should be 85%