Answer:
I’m pretty sure it’s all of the above! 
Explanation:
 
        
                    
             
        
        
        
Adenine, Cytosine, Guanine, and Thymine.
        
             
        
        
        
Answer:
 They contain protein fibres that can contract when energy is available, making the cells shorter.
 
        
             
        
        
        
I would say Satellites. Satellites are the only thing here I see can measure things globally, the rest is more regional.