Answer:
Hypothalamus 
Explanation:
is linked to the pituitary gland (both in the brain) which releases stimulating and inhibiting hormones which go to glands which are part of the endocrine system such as the thymus
 
        
                    
             
        
        
        
Diversifying selection, describes changes in population genetics in which extreme values for a trait are favored over intermediate values. The variance of the trait increases and the population is divided into two distinct groups. In the above question an example of diversifying selection is A population of moths with white and grey forms lives in a forest containing trees with light and dark bark. 
        
             
        
        
        
Artifact selections benefits humans by helping us learn what had happened in the past.