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Biology 19 Online
OpenStudy (quickstudent):

Flowering plants became important parts of the world's terrestrial ecosystems during the: a. Paleozoic Era b. Cenozoic Era c. Mesozoic Era d. Precambrian

OpenStudy (quickstudent):

I think it is b.

OpenStudy (deepika.comet):

yeah its coenozoic era - tertiary peroid

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