Presently, it is thought that organic polymers may have formed and accumulated on:
A) water and shells.
B) sand and mud.
C) silt and sand.
D) rocks and clay.
E) sand and heavy metals.
Correct Answer:
Verified
Q5: Multicellular eukaryotes arose about:
A) 3.8 billion years
Q6: The most significant outcome of the Miller
Q7: Chemical evolution:
A) cannot be investigated experimentally.
B) was
Q8: One critical requirement for life to arise
Q9: Which of the following gases was not
Q11: The approximate age of the Earth is:
A)
Q12: The hypothesis that organic molecules formed near
Q13: The Earth's early atmosphere was probably strongly:
A)
Q14: A compound that could not have been
Q15: There is evidence that life existed about:
A)
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