In 1953, Stanley Miller and Harold Urey built a model of Earth's early atmosphere by mixing gases that were thought to have been there. They exposed the gases to an electric current to simulate lightning. The liquid that condensed during the experiment contained amino acids.

What was the significance of their results?
A.
Miller and Urey showed that all life evolved from a single common ancestor.
B.
Miller and Urey showed that lightning was necessary for life to form on Earth.
C.
Miller and Urey showed that inorganic compounds could combine to form the building blocks of living cells.
D.
Miller and Urey showed that spontaneous generation was possible.

Scientists studied reproduction in the new zealand mud snail to answer the question, “are there benefits to reproducing sexually or asexually? ” which of these hypotheses would least likely aid the scientists as they worked to answer the question? sexual reproduction is advantageous over asexual reproduction because it reduces the rate of mutation accumulation. asexual reproduction is advantageous over sexual reproduction because it allows the snails to produce more offspring. sexual reproduction is advantageous over asexual reproduction because it allows for snails to have increased genetic variation. asexual reproduction is advantageous over sexual reproduction because it decreases the snails’ need for social