The red line is the wavelength 
The blue line is the amplitude
        
             
        
        
        
Things of the same species have similar morphology and can INTERBREED
        
             
        
        
        
Answer:
The phases of the Moon depend on its position in relation to the Sun and Earth. As the Moon makes its way around the Earth, we see the bright parts of the Moon's surface at different angles. 
Explanation:
 
        
                    
             
        
        
        
Swim Bladder           is the answer for sure