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 | How about plants? That a lot of photosynthesis is carried out means there are a lot of plants too, right? |  |
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 | Yes, there are a lot of phytoplankton. |  |
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 | Wait. Why don't you include any seaweeds? |  |
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 | Because seaweeds are found near the bottom of the ocean. Do you want me to repeat the definition of pelagic biomes? |  |
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 | I see. No thank you. So... how can phytoplankton carry out so much photosynthesis? |  |
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 | One of the reasons is their evolution. They have specialized features that evolved not to sink and to stay on the surface of the ocean. Some have spines both to increase surface areas and to slow down the sink rate. |  |
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