What is a stromatolite?
A) a region in the French Alps
B) a region of Earth's interior
C) an instrument used to measure rock chemistry
D) a mat of photosynthetic bacteria
Correct Answer:
Verified
Q96: About when did fishes first evolve?
A)350 million
Q97: The Sun is about _ times the
Q98: Q99: The mantle lies at a depth of Q100: Which is not used by scientists to Q102: How are the oceans and the greenhouse Q103: Why is the crust cracked into lithospheric Q104: About when did reptiles first evolve? Q105: Reading the geologic time table in this Q106: Tidal forces that partially keep Earth's interior
A)210 million
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