_____ was probably not present in the Earth's early atmosphere.
A) H2O
B) NH3
C) O2
D) CO2
Correct Answer:
Verified
Q47: Redi concluded from his experiment that
A) maggots
Q48: Pasteur put the theory of spontaneous generation
Q49: Spallanzani's experiment was criticized because
A) he did
Q50: Although they lived at different times, all
Q51: According to one hypothesis, the first eukaryotic
Q53: The Earth's early atmosphere
A) was a reducing
Q54: Endosymbiosis is a current theory that explains
Q55: Miller's apparatus synthesized
A) ammonia.
B) amino acids.
C) carbon
Q56: Miller's apparatus was designed to
A) simulate the
Q57: The formation of the first macromolecules from
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