Answer:
Refraction is the change in direction of waves that occurs when waves travel from one medium to another. Refraction is always accompanied by a wavelength and speed change. Diffraction is the bending of waves around obstacles and openings.
 
        
             
        
        
        
The epithelial cells resist stretching and twisting in the
skin because if desmosomes that holds them together. The desmosomes are the one
responsible for the cell to cell adhesions, making them be tight or held
together as this is its structure.
 
        
             
        
        
        
Chloroplast traps sunlight
        
                    
             
        
        
        
Explanation:
A cryosphere is just a hydrosphere but it's frozen in some way. glaciers, ice caps, and icebergs are cryospheres (frozen bodies of water).
 
        
             
        
        
        
When oxygen is absent, anaerobic respiration occurs ('an' means without).