지구의 표면, 대기, 수권 중 생명체가 살고 있는 영역 또는 그 안의 모든 생물.
The regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
예문:
"Human activities are causing significant changes to the delicate balance of the Earth's biosphere."
"The biosphere includes all living organisms and their relationships with the lithosphere and atmosphere."
"Scientists are studying whether other planets in our solar system could support a biosphere."