Miller and Urey's 1954 Hot Chemistry Experiment Was Based on the Assumption

Multiple Choice

Miller and Urey's 1954 hot chemistry experiment was based on the assumption that Earth's early atmosphere contained water (H₂O) vapor, methane, hydrogen, and ammonia.Subsequent research showed that volcanoes released carbon dioxide (CO₂) , hydrogen sulfide (H₂S) , and sulfur dioxide (SO₂) around 4 billion years ago.This discovery suggests that

A) early small molecules of life may have been produced in volcanoes.
B) Earth's early environment included these gases as well.
C) these gases were toxic to early life forms.
D) volcanoes may have been responsible for the oxygen production once attributed to cyanobacteria.
E) prebiotic synthesis could not have occurred in ice, since volcanoes would have melted the ice.