What Implication Does the Composition of Cometary Nuclei Have for the Creation

question 89

Multiple Choice

What implication does the composition of cometary nuclei have for the creation of life?

• A) They are made entirely of liquid water, which is needed by all life.
• B) They hold organic compounds, evidence that the ingredients necessary for the creation of life were present in the early solar nebula.
• C) Bacteria have been found in cometary nuclei, proving that life on Earth came from comets.
• D) They hold oxygen, which is needed for all life.
• E) Cometary impacts would have been "softer" than asteroid impacts, helping to prevent mass extinctions.

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