About when are Homo sapiens thought to have evolved?
A) 6000 years ago
B) 10,000,000 years ago
C) 200,000 years ago
D) 65,000,000 years ago
Correct Answer:
Verified
Q28: What is the lower mantle made up
Q29: Humans have been on Earth for _
Q30: When did our solar system form?
A) about
Q31: Evidence in the rock record shows that
Q32: About when did the first animals evolve
Q34: How did Earth's atmosphere become oxygenated?
A) volcanic
Q35: Geologic evidence indicates Earth's moon and core
Q36: Approximately when did the mass-extinction event that
Q37: Which class of animals rose to dominance
Q38: Earth's hydrosphere did not begin to form
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