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Question
Evolution of unicellular organism was in the ....................... era.
Evolution of unicellular organism was in the ....................... era.
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Solution
The correct option is C Archaeozoic
Archaeozoic era occured before 2.5 billion years ago, when the only life forms were blue-green algae and bacteria. Evolution of unicellular organisms occurred during this era.
Archaeozoic era occured before 2.5 billion years ago, when the only life forms were blue-green algae and bacteria. Evolution of unicellular organisms occurred during this era.
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