The age of the Earth according to modern estimations is about
A) 8 billion years.
B) 4.6 billion years.
C) 3.5 billion years.
D) 1.5 billion years.
E) a few thousand years.
Correct Answer:
Verified
Q12: Imagine that NASA discovered a new planet
Q13: The apparatus in the figure was used
Q14: The group that probably gave rise to
Q15: All of the following were produced in
Q16: The oldest microfossils are of
A)prokaryotes.
B)eukaryotes.
C)insects.
D)pollen grains.
E)small animals.
Q18: In the original experiments by Stanley Miller
Q19: It has been discovered that enzyme-like catalysis
Q20: True multicellularity is a major characteristic of
A)all
Q21: Why is a reducing atmosphere conducive to
Q22: Vascular plants appeared about 450 million year
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