Soil: What It Is and What It Does
HD
0
10 minExplains 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:
USGenre:
DocumentaryReleased:
1966-01-01Languages:
N/ACompanies:
Coronet Films