Im pretty sure that it is (A) because blood pumps to get every where through your body. If it didn't one half of your body would feel cold or numb.  
        
                    
             
        
        
        
Answer:
Cell membrane as  a semi permeable membrane.
Explanation
A semi permeable membrane is the one that would only allow water,ions  and certain molecules to pass through it  by diffusion while restricting other  large molecules from passing through.
Details in the attachment.
 
        
             
        
        
        
Answer: Nutrients and Sunlight
 
Explanation:
Nutrients and sunlight are two important factors for photosynthesis. Nutrients are necessary for keeping the plant alive these nutrients such as inorganic minerals are obtained by plants through soil. The sunlight is essential for splitting the molecules of water so as to produce oxygen as a product along with carbohydrates.
 
        
             
        
        
        
An eon is the most inclusive
        
             
        
        
        
Answer:
Male with attached earlobes