What other recent hypotheses would corroborate the hypothesis that life on Earth originated in space? (Choose all that apply.)
A) amino acids forming DNA
B) meteorites containing amino acids
C) cometary impacts as the source of water on Earth
D) early aerobic organisms created the oxygen in Earth's atmosphere
E) the fossil record showing how biological organisms on Earth have changed over time
Question 2
The Tully-Fisher relation exists between the galaxy's luminosity and its:
A) color.
B) age.
C) rotation.
D) mass.
E) size.
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