Soil: What It Is and What It Does
Soil: What It Is and What It Does
「Soil: What It Is and What It Does」フル ムービーをオンラインで視聴し、無料の をダウンロード. 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.
- ジャンル: ドキュメンタリー
- 国: United States
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