Type:

Other

Description:

In this video segment adapted from the independent film Big River: A King Corn Companion, the filmmakers explain how agricultural runoff from the Midwest has contributed to a massive "dead zone" in the Gulf of Mexico. A cornfield treated with conventional chemical fertilizer promises a bumper crop, but chemical runoff from the farm enters the Iowa River, eventually draining into the Mississippi River and the Gulf of Mexico. In the Gulf, these dissolved nutrients allow algae to flourish. The algae's decay depletes the water of oxygen, creating a dead zone where shrimp and fish are starved of oxygen and die. A background essay, discussion questions, and standards correlations are also provided.

Subjects:

    Education Levels:

    • Grade 1
    • Grade 2
    • Grade 3
    • Grade 4
    • Grade 5
    • Grade 6
    • Grade 7
    • Grade 8
    • Grade 9
    • Grade 10
    • Grade 11
    • Grade 12

    Keywords:

    Grade 6,NSDL,Grade 8,Grade 9,Space Science,Life science,oai:nsdl.org:2200/20120114184829237T,Social Sciences,Grade 7,NSDL_SetSpec_1007936,Earth processes,Grade 10,Grade 11,Grade 12,Life Science,Middle School,Earth and space science,Science and technology,Life cycles,Nature of science and technology,High School,Vocational/Professional Development Education,Technology,Geoscience

    Language:

    English

    Access Privileges:

    Public - Available to anyone

    License Deed:

    Creative Commons Attribution Non-Commercial Share Alike

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