Which era are we currently in?
A) Mesozoic
B) Precambrian
C) Paleozoic
D) Cenozoic
Correct Answer:
Verified
Q19: A black, organic residue of an ancient
Q20: A worm burrow is an example of
Q21: A neutron is a combination of a(n)_
Q22: What is the definition of a half-life?
A)The
Q23: For what reason might the nuclei of
Q25: The _ period on the geologic time
Q26: What is the half-life of potassium-40?
A)1.3 billion
Q27: What does "-zoic" in the eras of
Q28: A deposit of volcanic tuff contains the
Q29: What materials are best dated with carbon-14?
A)Igneous
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