Chemoreceptors is the answer
        
             
        
        
        
Pollination.....................
        
             
        
        
        
Answer:
At heart, all life on Earth uses a membrane that separates the organism from its environment. ... In this regard, water is essential simply because it's a liquid at Earth-like temperatures. Because it flows, water provides an efficient way to transfer substances from a cell to the cell's environment.
 
        
             
        
        
        
<span>Unicellular organisms would most likely have isogametes.
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