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Photoautotrophs Chemoautotrophs Cyanobacteria were the first organisms that released oxygen as a by-product of photosynthesis User: Gymnosperms and angiosperms that were more adapted to land were seed-bearing and able to reproduce using _____.

pollen

cones

flowers

seeds User: Scientists believe cyanobacteria chemoautotrophs photoautotrophs were the first types of cells able to make their own food.

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Photoautotrophs were the first organisms that released oxygen as a
by-product of photosynthesis

Gymnosperms and angiosperms
that were more adapted to land were seed-bearing and able to reproduce using seeds.

Scientists believe cyanobacteria were the first types of cells able to
make their own food.

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