bacteria nucleic acids viruses amino acids
I gave my students this multiple choice question: Scientists Stanley Miller and Harold Urey sealed water, methane, ammonia, and hydrogen in a flask, to simulate Earth's early environment. They exposed the chemicals to electric charges to simulate lighting. What did the process produce?

Only one answer is correct among these 4 choices:
- bacteria
- nucleic acids
- viruses
- amino acids

Could you tell me which one is correct?

amino acids