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Another name for unicellular organisms that dominated Earth up to the Precambrian time is
A. cyanobacteria.
B. eukaryotes. (Wrong)
C. prokaryotes.
D. stromatolites.

6. Which of the following resources is a nonrenewable resource?
A. Gold
B. Carbon
C. River
D. Tree(Wrong)

Answer :

Gold is a nonrenewable resource 

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