Answer:
it allows only some materials to pass through and leave the cell.
 
        
             
        
        
        
the offspring has a 50% chance of having black feathers and a 50% chance of white feathers
 
        
             
        
        
        
Answer:
Explanation:
friction between two rock surfaces grinding away minerals.
 
        
                    
             
        
        
        
Embryonic stem cells are pluripotent cells that are derived from the inner cell mass of a blastocyst before implantation. These cells have potential of treating a wide range of diseases and conditions, which is attributed to the fact that they have; self renewal property meaning that they can ploriferate indefinitely, the cells also have the special ability to differentiate into cells with specialized characteristics and functions. In addition the cells are unspecialized and therefore they can give rise to specialized cells.
        
                    
             
        
        
        
ab is the answer please give me brainleist answer