The correct answer is A, parathyroid gland. 
The parathyroid hormone is secreted by the parathyroid gland which <span>inhibits osteoblasts, stimulates osteoclasts,</span> reduces the calcium output by the kidneys and promotes absorption of the calcium by the small intestines. Calcitonin, secreted by the thyroid gland, also works to a similar effect.
        
             
        
        
        
Because of the way builds up in your body
        
             
        
        
        
mostly collagen and some calcium phosphate 
 
        
             
        
        
        
Answer:
behavior is considered the result of an interaction of genes and environment. For example, the development of intelligence depends on both the genetic influences on the brain and the environmental influences that affect learning in the child. Nature and nurture work together in behavior
Explanation:
 
        
             
        
        
        
Answer:
idhar re baba
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