A blue lizard eats the red fruit of a tropical cactus in the Seaflower Biosphere Reserve, Colombia. In the early 1970s, the United Nations established a project called the Man and the Biosphere Programme, which promotes sustainable development. A network of biosphere reserves establish a working, balanced relationship between people and the natural world.

Photograph by Gabriela Dominguez, MyShot
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biosphere
biosphere Encyclopedic Entry

Best For
5-12+

Subjects
Religion, Geography

Appropriate For

  • Educators
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Encyclopedic entry. The biosphere is made up of the parts of Earth where life exists. The biosphere extends from the deepest root systems of trees, to the dark environment of ocean trenches, to lush rain forests and high mountaintops.