They explained that: "Earth is the only planet we know that has a biosphere... Most of the organisms of the biosphere, and the vast number of its species, can be found at the surface or just below it… working together in a constant turnover of birth and death…Without the smooth working of all this linkage, the biosphere would cease to exist.
Thus, we need all of this biomass and biodiversity, including all of the creepy-crawlies. Yet in spite of its vital role, life at the ground level remains relatively unknown, even to scientists."
Photographer David Liittschwager actually took a green metal frame, a 12-inch cube, out in to the field for a closer look. To check out the miniature ecosystems photos from land, water, tropical, and temperate environments go to: http://ngm.nationalgeographic.com/2010/02/cubic-foot/wilson-text
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