Natural Sciences (Videos)
Natural Sciences (Videos)
Unesco
Soils
25 minutes Posted Jan 1, 2005 at 12:00 am.
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Soil works hard for us every year, growing our food, but are we giving it what it needs to survive? Without shelter, harsh sunlight bakes the soil, and torrential rains wash it away. Without food - new inputs of organic matter - soil loses its nutrients. We must feed it well for it to feed us well. Fortunately, there are many things people can do to help soil restore and keep its fertility
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