I would think it would be false considering part of the virus you are trying to get immunity to is in a vaccine 
        
             
        
        
        
Answer: Farming
Explanation: Plowing the land is the  first source of wealth.
 
        
             
        
        
        
My answer is A i hope this really helps u!
        
                    
             
        
        
        
Transfer ribonucleic acid (tRNA) is a type of RNA molecule that helps decode a messenger RNA (mRNA) sequence into a protein. tRNAs function at specific sites in the ribosome during translation, which is a process that synthesizes a protein from an mRNA molecule.