这个生态系统是生物圈中令人着迷的悖论之一:清澈而又缺乏营养的水域是如何支撑如此多产的群落的?
Recently planetary scientists have suggested that the external preconditions for the development of Earth's biosphere probably included four paramount contingencies.最近,行星科学家提出,地球生物圈发展的外部先决条件可能包括四个最重要的偶发事件。
Biocycle is the cycling of chemicals through the biosphere.生物循环是化学物质在生物圈内的循环。