根据浮游植物的种类和浓度，海洋颜色有从绿色到蓝色不等。
Ocean colour varies from green to blue, depending on the type and concentration of phytoplankton.
最早的有性繁殖生物是自由漂浮的浮游生物。
The first organisms that reproduced sexually were free-floating plankton.
该模型预测，目前只有少量浮游植物的蓝色区域可能会变得更蓝。
The model projects that currently blue areas with little phytoplankton could become even bluer.
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