mostly collagen and some calcium phosphate 
 
        
             
        
        
        
Answer:
This process will harm marine life due to scarcity and reduction of oxygen levels. This will significantly harm the marine ecosystem as well.
 
        
             
        
        
        
Answer:
The inducer will combines with the repressor and inactivates the pathway.
Explanation:
Inducer is a term in Molecular Biology, which represent a molecule or substance that has the capability to activate the transcription of a gene, where by it joins with and then inactivates a genetic repressor.
In other words, the inducer binds with the repressor in order to prevent the RNA polymerase to combine to the DNA, and chemically produce mRNA, this is done by repressor proteins combining with the DNA strand.
Inducer specifically makes repressor to change shapes, which will make it not combine with the DNA, and therefore, allow formation of transcription, such that expression of gene will eventually occur.
 
        
             
        
        
        
Answer:
The description indicates that Genetic variation is decreasing  
The reasoning is that SEM is progressively smaller 
Explanation: 
Genetic variation decreases when organisms mate between relatives 
 
        
             
        
        
        
Answer:
The answer is option 2.
Explanation:
Mutation occurs when there is a change in DNA base sequences.
(Correct me if I am wrong)