bergenethan6181 bergenethan6181

27-05-2024
Biology

Answered

During the period of the era, atmospheric O2 level was almost equal to the present level, and multicellular life forms were abundant and diverse in the sea (but nowhere to be found, yet, on land).
A. Carboniferous; Paleozoic
B. Cretaceous; Mesozoic
C. Cambrian; Paleozoic
D. Quaternary; Cenozoic
E. Permian; Paleozoic

Answer :

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