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biosphere |
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biosphereNarrow zone that supports life on our planet. It is limited to the waters of the Earth, a fraction of its crust, and the lower regions of the atmosphere. The biosphere is made up of all the Earth's ecosystems. It is affected by external forces such as the Sun's rays, which provide energy, the gravitational effects of the Sun and Moon, and cosmic radiations. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The biosphere is a closed and self-regulating system (see ecology), sustained by grand-scale cycles of energy and of The biosphere is a closed and self-regulating system (see ecology), sustained by grand-scale cycles of energy and of The biosphere is a closed and self-regulating system (see ecology), sustained by grand-scale cycles of energy and of |
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