;Scientists think that little or no oxygen gas existed on the early Earth until photosynthesizing bacteria produced oxygen gas in abundance. What do these ancient photosynthesizing bacteria have in common with organisms today? a)They needed oxygen from the atmosphere to carry out cellular respiration. b)They needed sunlight to survive and to produce energy for food. c)They passed on their genetic material to new cells when they reproduced. d)They relied primarily on gases produced by active volcanoes.

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;Scientists think that little or no oxygen gas existed on the early Earth until photosynthesizing bacteria produced oxygen gas in abundance. What do these ancient photosynthesizing bacteria have in common with organisms today? a)They needed oxygen from the atmosphere to carry out cellular respiration. b)They needed sunlight to survive and to produce energy for food. c)They passed on their genetic material to new cells when they reproduced. d)They relied primarily on gases produced by active volcanoes.

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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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This is a science question... O_o
b
Yes b. If they are "photosynthesizing bacteria", then they need sunlight. The answer can't be a. Oxygen because this is what they produced. It can't be c. Cells, because they are bacteria. And it can't be d. gases from volcanos, because that's hardly an important requirement for life today.

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