en Cuevana3. Explains that different kinds of soil are mixtures of sand, clay, and humus; tells how the weathering of rocks helps make soil; includes simple experiments to show the kind of soil in which different plants grow well.
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Tags: # 1970 # pelicula completa # pelicula completa online # pelisplus # pelisplus2 # pelisplus 3 # pelisplushd # pelispedia # pelisgratis # gnula # miradetodo # repelisplus # pelis24