NITROGEN CYCLE

Duration: 15 min

Year Published: 1938

Creator: Encyclopaedia Britannica Films Inc

Format: 16mm

Description: Nitrogen compounds serve as a key to the transfer of energy in nature. The growing green plant synthesizes nitrogen compounds. Animals depend upon plants for food. For the most part, man must be responsible for the return of nitrogen compounds to the soil.

Complete Record: Dewey number: 581 Audience level: jh-sh-c Guide Format/cost: 16-sl-$24 Distributors / rental: Ohio Department of Education; Encyclopaedia Britannica Films Inc

Metadata Source:Educational Film Guide 1946