Soil: What It Is and What It Does
Soil: What It Is and What It Does
Soil: What It Is and What It Does Online zdarma kukaj.to 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.
- Žánr: Dokumentární
- Země: United States
- Ředitel:
- Obsazení: