In the 1950s, Stanley Miller and Harold Urey conducted experiments in which they fired electrical sparks in the presence of a mixture of different gases. How d these experiments contribute to the theory of the origins of life on earth? A They determined that the age of organic molecules can be measured by the half-life of isotopes

B They showed that organic molecules could be formed from materials nypothesized to be available in the Earth's early atmosphere

C They proved that organic molecules formed from the accumulation of debris from space

D They discovered that organic molecules would not have formed without the presence of oxygen in the atmosphere​

biology spring assessment 2020-2021