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SashulF [63]
4 years ago
9

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

a b. Cenozoic era d. Paleozoic era Please select the best answer from the choices provided A B C D
Biology
1 answer:
kirill [66]4 years ago
8 0

Answer:

D

Explanation:

Complex organisms with gills and lungs were major life forms that existed in the Paleozoic Era. The answer is D.

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