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Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled
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Biology, 22.06.2019 15:00, Marliii363782
Which organelle plays a role in intracellular digestion?
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Which of these could define a hypothesis...
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