What was the era during which the earliest signs of life appeared?
A) the Archean
B) the Paleozoic
C) the Mesozoic
D) the Cambrian
Correct Answer:
Verified
Q14: What happened during the Cretaceous period?
A)Mammals diversified
Q15: When did most dinosaurs become extinct?
A)around 500
Q16: Which of the following is the oldest
Q17: Most paleontologists agree that the parts originally
Q18: When did mammals undergo an evolutionary "explosion"
Q20: What is the evolution of many species
Q21: What is a likely result of a
Q22: When did the first land plants appear?
A)during
Q23: What genes control the overall body plan
Q24: A single seed lands on one of
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