The independent variable is the type of food available.<span>The dependent variable is the frequency of each type of beak (or number of birds with each beak type)</span>
        
                    
             
        
        
        
Folds, wrinkles, etc! 
by folding the membrane of an organelle, surface area is optimized while volume remains the same. that is why mitochondria looks folded on the inside when you see pictures of it. the higher the surface area to volume ratio, the more efficient the organelle.
        
             
        
        
        
Answer: 
The correct answer is option b, 0.3m/s
Step by Step solution:
The relation between speed, wavelength and frequency of a wave is given by the following equation:  
Speed = Wavelength x Frequency
Substituting the values in above equation we get –  
= 3  x 0.1  
= 0.3 m/s  
 
        
                    
             
        
        
        
Based on the characteristics you describe, this is most likely a type of fungi.