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bi·o·sphere
 biosphere
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- pronunciation:
- baI
 s
fir
- features:
- Word Parts
| part of speech: |
noun |
| definition 1: |
When people talk about Earth's biosphere, they mean all parts of the Earth where animals and other living things are able to live. The biosphere includes areas of land both above and below the ground. It also includes the air around the earth and bodies of water, such as lakes and seas. Anywhere that living things can exist is part of the biosphere.
Tropical rainforests are home to the greatest variety of plants and animals in Earth's biosphere. |
| definition 2: |
When people talk about the biosphere, they are sometimes talking about all the living things that live in the air, water, or land around the planet Earth. They are talking about both the living things and the places where it is possible for them to live.
Plants, fungi, fish, tigers, birds, humans, algae, and bacteria are some of the living things that are part of Earth's biosphere. |
| related words: |
globe, world |
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