The answer is Parathyroid Hormone (PTH). Steroids reduce calcium
levels in the blood. This results in activation of the parathyroid hormone that
is essential in the metabolism of calcium
in the blood. PTH induces reabsorption of
calcium from bones to restore homeostasis
Ca2+ levels in the blood hence causing
osteoporosis. Osteoporosis causes an increased risk of bone fractures. 
 
        
             
        
        
        
first one is definitely a fact
 
        
                    
             
        
        
        
Answer:
8.7 million
Explanation:
About 8.7 million (give or take 1.3 million) is the new, estimated total number of species on Earth -- the most precise calculation ever offered -- with 6.5 million species on land and 2.2 million in oceans.
 
        
                    
             
        
        
        
B. and I get you the one who made up this question is dump -_-