Closely associated with the benthic community are organisms collectively called periphyton or aufwuchs.
但是当水

,
物相会改
。
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地球 When the great cycle of snow years, called the Glacial Period, was nearly complete in California, the ice-mantle, wasting from season to season faster than it was renewed, began to withdraw from the lowlands and gradually became shallower everywhere.
当被称为冰川期
大雪年循环在加利福尼亚接近完成时,冰层逐季消融速度快于更新速度,开始从低地撤退并逐渐在各处变浅。