What is an isotope?

 

Which carbon isotopes would be useful in aging molecules?

 

 

What is a stromatolite?

 

 

Why would scientific investigators use water as a basic solvent in their experiment?

 

 

What chemicals were used in the experiments of Miller and Urey?

 

 

Was the supposed atmosphere of the earth during the early years of this planet as reducing as the atmosphere used by Miller and Urey?

 

 

What other chemicals could be used to mimic the atmosphere that presumably occurred at the time molecules were being formed? Defend your answer.