Answer:
The thyroid gland increase in size. 
Explanation:
Iodine plays an important role in the generation of thyroid hormones and is mainly found in the soil in coastal areas and in seawater. In the developing nations, the individuals who live at high elevations or inland are generally deficient in iodine and can develop a condition known as goiters.  
In the condition, the thyroid gland increases in size in an attempt to get more iodine. However, in the countries where iodine is added routinely to foods and table salt, the lack of dietary iodine is not the typical reason of goiters.  
 
        
             
        
        
        
Answer:
It prevents their species from going extinct. 
 
        
                    
             
        
        
        
Answer:
 The cause is likely Manifestation of dehydration
Explanation:
The hematocrit measures the red cell mass in a 100-mL plasma volume. The hematocrit may be deceptive because it varies with the quantity of extracellular fluid, rising with dehydration and falling with over expansion of extracellular fluid volume. The client is manifesting an abnormal elevation as a result of fluid loss.
 
        
             
        
        
        
Alternative RNA splicing determines which proteins are produced from each gene.
        
             
        
        
        
The answer is c mediastinum