Soil: What It Is and What It Does
Soil: What It Is and What It Does
Guarda soil: what it is and what it does su StreamingCommunity. 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.
- Genere: Documentario
- Nazione: United States
- Direttore:
- Cast:
