Biomarkers are __________, which provide key information about the former presence of ancient life.
A) chemical residues in rocks
B) teeth and bones
C) fossil fuels
D) impressions and molds
Correct Answer:
Verified
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Q4: Some of the Archaea are notable for
A)
Q5: In the _, the reproductive cycle entails
Q6: _ release enzymes to break down food
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