Multimedia
Earth / Experiments
The compass
Learn to build a simple compass and you'll always know where to go...
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Earth / Photos
Tacchi caveRelated topics
Life produces organic material
The organic part of soil comes from organisms that live over and under its surface
Pedobiology
Soil is the ‘place’ where materials essential for ecological equilibrium are formed and decompose...
Earth biology
n the soil, the main biological role, in purely quantitative terms, is played by micro-organisms and in fact...
An environment full of life
Even though not much is known about soil organisms, it is certain that soil is not an inert and sterile environment...
