What is the significance of finding evidence that zirconium/uranium rocks formed in water 4.2 million years ago?
A) The Earth coalesced from gas earlier than originally thought.
B) The Earth cooled earlier than originally thought.
C) Zirconium can be used for dating old rock samples.
D) Radiation played a role in the origin of life.
Answer: B
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What is the role of the FtsZ protein in bacterial cells?
What will be an ideal response?