# biosphere

/ˈbaɪoʊsˌfɪɹ/ (US) · /bˌaɪəʊsfˈiə/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/biosphere
Updated: 2026-05-19

## Definition

the part of the Earth where life exists. It includes all the living things and the parts of the planet they need to survive, like air, water, and soil.

For teachers: the global ecological system consisting of all the living organisms and the parts of the Earth where they live. It encompasses the lithosphere, hydrosphere, and atmosphere.

## Examples

- The biosphere includes all the plants, animals, and microbes on Earth.
- Scientists are studying how rising temperatures might affect the biosphere and the delicate balance of life within it.
- The concept of the biosphere highlights the interconnectedness of all living organisms and their physical environment, suggesting that no species exists in isolation from the global ecosystem.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.