well it is not exactly essentioal but salmon need it
 
        
             
        
        
        
Answer:
If you don't put a tittle I can't help you
Explanation:
 
        
             
        
        
        
That would be A- Osmosis.
I hope this helps! (:
        
                    
             
        
        
        
<em>It involves making observations, formulating a hypothesis, and conducting scientific experiments. Scientific inquiry starts with an observation followed by the formulation of a question about what has been observed.</em>
<em>Hope this helps</em>
<em></em>
<em>Please give me brainliest</em>
<em></em>
<em>Thank you for letting me answer your question </em>
<em></em>
<em>Thank you,</em>
<em>Florida Mermaid</em>
 
        
             
        
        
        
The answer is C
hope this helps!!