Soil: What It Is and What It Does (1966)

Soil: What It Is and What It Does (1966)

1966-01-01 United States of America 10 Min. PG-13
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Overview

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.

Cast

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