By American Geosciences Institute (AGI); Earth Science Week (ESW); Soil Science Society of America (SSSA)
We walk around on soil all the time, but how often do we think about what's in it? If you have ever looked closely at soil, you probably saw that it is made up of various types of particles and has various materials mixed in with those particles (rocks, twigs, water, air, worms, insects, and much...
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