These fuels are nonrenewable because they are limited substances which cannot be produced at the same rate at which it is used. Also, they cannot be REused, hence the wording non-REnewable. Hope this answers your question.
        
                    
             
        
        
        
Explanation:
Tahukah kamu, mengapa motor berhenti di depan lampu merah?
karena motornya direm. Coba kalau nggak direm bisa bahaya tuh.
Tebak binatang apa yang jago renang?
Bebek. Kalau ikan bukan renang tapi menyelam
Kenapa di rel kereta api ditaruh batu?
Soalnya kalau ditaruh duit nanti pada diambil.
 
        
                    
             
        
        
        
I would say the nucleotides
Cytosine
Guanine 
Adenine
Thymine 
 
        
                    
             
        
        
        
1.) UUUUUAACG
2.) CCGAAAUGU
3.) AUUACGCAU
4.) GAUCAUUAC