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In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls
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When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?
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Which of these is a harmful interaction? (4 points) Competition Mutualism Commensalism Symbiosis...
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