Complex organisms with gills and lungs were major life forms that existed in the_____________. a. Mesozoic era c. Precambrian era b. Cenozoic era d. Paleozoic era

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asked Oct 20, 2022 134k views

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Complex organisms with gills and lungs were major life forms that existed in the_____________.

a.
Mesozoic era
c.
Precambrian era
b.
Cenozoic era
d.
Paleozoic era

English
college

Steve Lillis asked

by Steve Lillis

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Answer:

D which is that Paleozoic era

Step-by-step explanation:

Paleozoic era

Mike MacMillan answered Oct 27, 2022

by Mike MacMillan

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