The biosphere consists of living things and the environment ​ — the atmosphere, the land, and the oceans — ​ from which they derive the energy and nutrients needed for life.
Biosfäär koosneb elusloodusest ja keskkonnast — atmosfäärist, maismaa pindmisest kihist ja ookeanidest —, millest elusloodus ammutab eluks vajalikku energiat ja toitaineid.