The innermost cells of the epidermis are continuously dividing through mitosis to form new cells. The newly formed cells move up through the epidermis toward the skin surface, while producing a tough, fibrous protein called keratin.
        
             
        
        
        
Answer:
a) we have very expressive faces
Explanation:
The reason the facial region of this homunculus covers such a large surface area is that we have very expressive faces
 
        
             
        
        
        
Answer:
Today, mitosis is understood to involve five phases, based on the physical state of the chromosomes and spindle. These phases are prophase, prometaphase, metaphase, anaphase, and telophase.
Explanation:
 
        
                    
             
        
        
        
Answer:fossil fuels are nonrenewable and inexpensive while wave energy is renewable and does not emit greenhouse gases. 
Explanation: