Decomposer, they eat dead organic material
        
                    
             
        
        
        
Answer:
Knowledge of the relationship between the size (volume) of cells and their surface area helps explain the process of diffusion. Agar blocks and cells with the largest surface area to volume ratio (the smaller cubes) have the highest diffusion rates.
Explanation:
 
        
                    
             
        
        
        
The vertebrate endoskeleton is internal while an arthropod's exoskeleton is not
        
             
        
        
        
Answer:
B) number of muscle cells ❤️