Answer:
heron and perch or fox they are 
 
        
             
        
        
        
When there is a high concentration of positive transcription factors but a low affinity for the positive transcription factor
Transcription factors are proteins that regulate the transcription of genes—that is, their copying into RNA, on the way to making a protein.
Proteins called transcription factors, however, play a particularly central role in regulating transcription. These important proteins help determine which genes are active in each cell of your body.
<h3>How does transcription factors affect gene expression?</h3>
Under the influence of transcription factors, the various cells of the body can function differently though they have the same genome. Transcription factors attach to one or more series sites, which are called transcription element binding sites (TFBSs), binding to specific DNA sequences of the genes they control 
To learn more about  transcription factors, refer
brainly.com/question/6604811
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Answer:
II. This type of RNA molecule transports amino acids from the cytoplasm to the ribosomes to build proteins.
 
        
                    
             
        
        
        
I think the answer is B. Immigration must outpace emigration. Hope this helps!