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The Nitrogen Cycle

16 minutes

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Videos are generally available for preview to non-members as short clips. Limited full-length titles are also available. Log In to view the full length title.

Browse Full-length Non-member Titles

Closeup of several bright green leafy plants sprouting in soil.

Nitrogen is important to all living things. Explores how plants and animals get it and differentiates between the essential "fixed" and unuseable "free" nitrogen. Explains how nature plays a role in combining nitrogen with other elements to produce "fixed" nitrogen. Presents the nitrogen cycle and mentions causes and effects of nitrogen pollution. Ends with a quiz.

Media Details

Runtime: 16 minutes

Topic: Science
Subtopic: Biology, Chemistry, Ecology
Grade/Interest Level: 7 - 12
Standards:

Release Year: 1994
Producer/Distributor: United Learning, Inc.
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Lab equipment in background with illustration of DNA strand, question marks, and an arrow pointing to the horn on a unicorn. Caption: We'd want to know what parts of the genome make the horn.

Lab equipment in background with illustration of connected neurons. Caption: glia activate and help fix the neurons

Night shot of a bug-eyed creature with mangy brown and white fur grasping a branch with long claws.

A caterpillar curled in a circle, mostly encased in a protective covering. Caption: Then the caterpillar goes to sleep.

Green foliage with a pink flower overlooks the shoreline. Spanish captions.

Closeup of a bright orange and blue tropical flower. Spanish captions.

A seal swimming underwater near the ocean floor. Caption: still remain to satisfy diurnal scavengers

A warthog with long tusks curving towards its body and leathery skin covered in mud. Caption: we can see that each has a beauty all its own.

Person driving a large piece of industrial farm equipment. Caption: towards managing agricultural systems

Text reads, “Algae,” against a black and green background.

Viewer Comments

JOHN K. (Bloomfield Hills, MI)

March 12th, 2015 at 02:23 PM

The streaming version would be nice and more convenience.