Answer:
Parathyroid hormone increases the level of calcium while calcitonin hormone  decreases the level of calcium in the blood.
Explanation:
Parathyroid hormone is a type of harmone which is responsible for balancing calcium in our body. When the calcium level lowers in our body, parathyroid hormone is secreted and calcium is absorbed from the bones and fullfilled the requirement of the body. If the tumor secreted calcitonin hormone instead of parathyroid hormone, the calcium level in the blood is lowered because it acts to the opposite of parathyroid hormone.
 
        
             
        
        
        
The correct option is ALDOSTERONE.
Angiotensin ll is one of the most potent sodium retaining hormones. It regulates aldosterone release from the adrenal cortex. The aldosterone hormone stimulates sodium re-absorption through mineralocorticoid receptors in the connecting and cortical segments of the collecting tubules.
        
             
        
        
        
When the bond between the second and third phosphate group is broken in ATP, ADP is formed and energy is released. This energy can power the cell's functions.
        
             
        
        
        
Answer:   
Cane toads were introduced intentionally in Australia in 1935 to combat cane beetles in the sugar cane crop fields. These toads exhibit higher feeding capacity. These can feed not only cane beetles but other insects which affecting agricultural yields. They are poisonous in nature, they kill any insect after ingestion. Therefore, they are useful biological insecticide which provides crops resistance against insects. 
 
        
                    
             
        
        
        
Answer: In medicine, it refers to parts of the body further away from the center. For example, the hand is distal to the shoulder.