The second one changes in the amount of atmospheric gases because it think it might effect everyone including plants and animals because will all breath the same air rather than a mountain  building it might affect the animals that like there.
        
             
        
        
        
Answer:
Muscle tissue originate from mesoderm (one of the three germ layers). Muscle cell are made up of fibers called myofibrils.
Explanation:
 
        
                    
             
        
        
        
<span>The function of an ADP, or Adenosine diphosphate molecule, is to assist in the flow of energy throughout the cell. The basic structure of the molecule itself is made up of three main parts - a sugar backbone, which is attached one adenine molecule and two phosphate groups, which is then bonded to a 5' carbon atom of ribose. </span>