Answer:
Endorphins.
Explanation:
This is because endorphins are natural chemicals the body produced in order to relieve the body of pains which also belong to the same categories as opoid because opoid are drugs that are administered to people to relieve them in of pains. They can be prescribed for short term use mainly after a surgery.
Answer:
-Muscle diseases are less common than diseases of bones and joints
The mitochondria produces majority of the cell's ATP
The answer is areas with lower diversity have less rainfall
A. Is the correct answer. A vertebrae/invertebrate animal is determined on wether they have a backbone(vertebrae) or not
