biosphere
/ˈbaɪoʊˌsfɪr/
noun
- The part of Earth and its atmosphere where living things exist, including land, water, and air.
- The biosphere includes all forests, oceans, and even the air we breathe.
- Scientists study the biosphere to understand how ecosystems support life.
- Human activity is changing the biosphere faster than ever before.
- A closed system containing living organisms and their environment, used for scientific experiments.
- Inside the biosphere, the air and water are recycled completely.
- The research team built a small biosphere to test how plants survive in space.
- Students designed a mini biosphere with algae and shrimp in a sealed jar.