I’m pretty sure it’s c but I might be wrong
        
             
        
        
        
Hey there,
Question : <span>When in the presence of sugar, Yeast perform wich process?
Answer : </span><span>an anaerobic process that has carbon dioxide as a byproduct.
Hope this helps :))
<em>~Top♥</em>
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People who have darker skin have more melanin which is a black or dark brown pigment in the skin. When we are out in the sun our skin produces more melanin, which helps our skin be more resistant in the sun. This is why we tan.
        
             
        
        
        
12C,13C,14C
these are all carbon Isotopes