Environmental Education (84/118)

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Bronx middle school students volunteer their time in Bronx Park in New York on Tuesday, April 13, 2010.  The students  test the water quality of the Bronx River   by measuring the dissolved oxygen in the water.  (© Frances M. Roberts)
Bronx middle school students volunteer their time in Bronx Park in New York on Tuesday, April 13, 2010. The students test the water quality of the Bronx River by measuring the dissolved oxygen in the water. (© Frances M. Roberts)
Filename: bronx_river_7218.JPG
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