Fill in the blanks:
The primitive multi-cellular life first appeared in the age of _____________.
The primitive multi-cellular life first appeared in the age of Proterozoic era.
Fish, reptiles as well as various plants appeared in the Palaeozoic era.
In Mesozoic era dinosaurs came into being.
Australopithecines (literally ‘southern ape’) appeared in the Cenozoic era.
Couldn't generate an explanation.
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