Answer: Hydrogen 
Explanation:
Because it is the element that everything is created with it is everywhere. All life has hydrogen in it, our air, SPACE, everything.
 
        
             
        
        
        
Pretty sure its secondary waves
        
             
        
        
        
Answer:
Gregor Mendel belonged to a family of farmers but he went to pursue academic studies. all these things combined with his curiosity resulted in his research studies.
Explanation:
An Austrian monk by profession, Gregor Mendel through experimental studies in his garden, discovered the basic principles of heredity. Mendel 's observations have become the basis of modern genetics and the study of heredity, and he is universally recognized as a foundation for the development of genetics. His strong will led him away from his family occupation of farming. More working in a church it was no less than a revolutionary step to choose science above faith, especially at that time.
 
        
             
        
        
        
I would say D. <span>Proteins are made from DNA, which is created from RNA.
I hope I was of assistance to you</span>