Soil: What It Is and What It Does
0
10min
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.
Country:
Genre:
Documentary
Released: 1966-01-01
Countries:
United States of America
Production:
Coronet Instructional Films
Casts:
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